Mead Making Calculator									</td>
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					Wednesday, 21 June 2006				</td>
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				<script type="text/javascript" language="JavaScript">var sburl2967 = window.location.href; var sbtitle2967 = document.title;</script><script type="text/javascript" language="JavaScript">var sbtitle2967=encodeURIComponent("Mead Making Calculator"); var sburl2967=decodeURI("index.php?option=com_content&task=view&id=745"); sburl2967=sburl2967.replace(/amp;/g, "");sburl2967=encodeURIComponent(sburl2967);</script><div style="float:right; margin-left: 10px; padding-bottom: 10px; text-align: right;"><script type="text/javascript" language="JavaScript">digg_url = 'index.php?option=com_content&task=view&id=745';</script><script src="index.php_files/diggthis.js" type="text/javascript"></script></div><!--
This utility is aimed at helping you to calculate recipies and
additions to mead (or wine).
It also works as a conversion utility between units of
- specific gravity
- volume
- weight

Assumptions:
- BRIX/Balling/Plato are the same scale  ( just different accuracy and reference temp )
- Baume is PA (approx)
- BRIX = 135.997(SG^3) - 630.272(SG^2) + 111.14SG - 616.868
- SG = 1.00001+(BRIX/(258.6-0.89*BRIX))
- Baume (Bates et. al. 1942 @ 20 degC) = 145*(1-(1/SG))  => SG=145/(145-Baume)   ( also  Brix = 0.033431522+0.5532*Plato  to match 145-145/SG formula )
- %ABW (Alc by weight) = 0.8 * % ABV (Alc by Volume)
- %ABV = Baume
- g/L sugars from SG = 10*SG*Plato  where Plato is the Brix 3rd order quadratic eqn defined above
- sugars from g/L conversion is derived to 3 significant figures using brute-force solving of the g/L to sugars formula (guessing sg values)
- Temp correction for hydrometer (SG correction) = 1.313454 - 0.132674*T + 2.057793e-3*T**2 - 2.627634e-6*T**3
   for 59F (15C)
- C = 5*(F-32)/9
- F = C*9/5 + 32
- 1 US Gal = 1.2 Imp Gal = 0.263963098 Litres
- for honey: 1 Pound = 12 US Gal = 14.4 Imp Gal = 1.65345 Litres = 2.2046 Kg 
                     = 0.062501 Oz = 0.39186765 Cups
                     = 0.04889252 US Fl Oz = 0.04695798 Imp Fl Oz
                     = 0.7771215 Us Pints = 0.7771215 Imp Pints 
                     = 1.5641637 US Quarts = 1.8783192 Imp Quarts

Previously assumptions (prior to v0.4) were
- 8 gravity points per pound of honey in 5 US gallons  (note that v0.4 onwards, it is 7.2 gravity points)
- BRIX = 220(SG-1) + 1.6
- Baume = BRIX/1.8
- %ABW (Alc by weight) = 0.8 * % ABV (Alc by Volume)
- %ABV = 139.706 * SG - 140.219  (from linear solution of hydrometer table figures)
- The formula for calculating the SG from the Volume & Quantity of honey is:
    Gravity = 1 + (Grav_Factor*Quantity)/(1000*Vol/5 US Gal) = 1 + (Grav_Factor*Quantity)/(200*Vol)
       where  Grav_Factor is the 8 gravity points per pounds honey in 5 US Gal
V1.1
====
Fixup conversion to cups, and changed wording from like US Gallon(s) to Gallon(s) US to group measurement
  types together - easier to see gallons from quarts, from ....
Add function to do bit-and to avoid import effects when importing into Joomla
Changed help file to point to gotmead help file URL

V1.0
====
Conversion of quarts/pints/cups/... to Gallons fixed
Blending utility selects the volume when you click the associated text entry box
Blending utility added radio buttons to change the headings (eye candy!)
Batch Util calculations now use 3rd degree polynomials to convert SG to Plato/Brix/Balling
Potential Alcohol Conversion utility added
Blending Utility now has buttons to select which value to calculate
Changing the Gravity type or PA type on the Batch Utility changes the selection on the
  Potential Alc utility (but not vice versa)
Switched layout location of Target SG & Vol with Current SG & Vol (as suggested by Angus)
Added reset and clear buttons to the Blending Util 

V0.3
====
Added Maple Syrup (66%) & Maple Sap (2%)

Fixes
- added "(s)" to most of the fruit to make the names include the plural

V0.2 
====
Additions
- Blending calculations rounded to 3 decimal places
- Help button added to open "mead_util_help.html" in a new window
- Sugar content of HONEY set to 79.6% (based on "COMPOSITION AND ORGANOLEPTIC EFFECTS"
   at http://www.solorb.com/mead/danspaper.html
- added raisin & saltana as 19% sugar content
- added Mulberries (13.5% sugar)
- added Pints, Fl Oz, Oz, Cups, Quarts

Fixes
- quantities now change for Sugars 2,3 & 4 when quantity type units are changed
- Kg = 2.204622 Pounds for sugar quantities - was 3.712714
- Allow independant selection of Quantity type for the 4 sugars - this allows for
    each addition to be its own unique quantity type (pound, Kg, Litres,...)
- limited the field widths to display ony 2,3 or 4 decimal places as appropriate
  SG: 4 decimals,  Temperature & Volume: 2 decimals, Fruit sugar Quantity: 3 decimals
- Sugar quantities now align to the values in a hydrometer table (not perfectly), but 
  there are also discrepancies between different hydrometer tables

-->


<form name="util" onclick="i_updateStats();">
  <!-- Variables for use later -->
  <input name="sg_setting" value="0" type="Hidden">
  <input name="vol_settingc" value="1" type="Hidden">
  <input name="vol_settingt" value="1" type="Hidden">
  <input name="vol_valc" value="0" type="Hidden">
  <input name="vol_valt" value="5.0" type="Hidden">
  <input name="quant_setting1" value="1" type="Hidden">
  <input name="quant_setting2" value="1" type="Hidden">
  <input name="quant_setting3" value="1" type="Hidden">
  <input name="quant_setting4" value="1" type="Hidden">
  <input name="type_setting" value="0" type="Hidden">

  <input name="sgOrigConv_setting" value="0" type="Hidden">
  <input name="sgOrigConv_Val" value="1.108" type="Hidden">
  <input name="sgFinConv_Val" value="0.998" type="Hidden">
  <input name="sgABVConv_Val" value="14.37" type="Hidden">

<table class="bordercolor" border="1">
 <tbody><tr>
 <th colspan="2">
  Mead Batch Calculation Utility V1.1
 </th>
 </tr>
 <tr>
  <td colspan="2" align="CENTER">
  <small> <strong><i> Check the items you know, and supply the data. </i></strong><i>&nbsp;&nbsp;
  The results are automatically supplied if possible. </i></small>
    
   <table border="0" cellpadding="2" cellspacing="0">
    <tbody><tr> <td colspan="2" align="CENTER"> <small> SHADED areas are the most commonly used areas.</small> </td> </tr>
    <tr> <td valign="TOP" width="35%" align="RIGHT"> <small> A <strong>new </strong> must? (fixed gravity)</small></td><td> <small> - check/enter the "Additional Sugars" and "Target Gravity" </small> </td> </tr>
    <tr> <td valign="TOP" width="35%" align="RIGHT"> <small> A <strong>new </strong> must? (fixed volume)</small></td><td> <small> - check/enter the "Additional Sugars" and "Target Volume" </small> </td> </tr>
    <tr> <td valign="TOP" width="35%" align="RIGHT"> <small> Adding to an <strong>existing</strong> must? </small></td><td> <small> - check/enter the "Current Gravity", "Additional Sugars" 
	                                                    and one or both of the "Targets" <br> - If BOTH Gravity and Volume targets are checked, the next available "Additional Sugars" is calculated</small> 
		</td> 
	</tr>
   </tbody></table>
  </td>
 </tr>
 <tr>
  <td colspan="2" align="LEFT">
    <b> Preferences for Measurements: </b>
    <input name="prefs" onclick="i_updatePrefs(this);" type="radio"> Metric
    <input name="prefs" checked="checked" onclick="i_updatePrefs(this);" type="radio"> US
    <input name="prefs" onclick="i_updatePrefs(this);" type="radio"> Imperial 
  </td>
 </tr>
 <tr>
  <td colspan="2" align="LEFT">
    <b> Temperature of Must </b> 
    <input name="mustt" value="68" size="10" type="TEXT">
      <!--  NOTE:  conversion formula (C to F) is the value of the option - AutoConverts when selected -->
    <select name="mustt_s" onchange="eval(this.options[this.selectedIndex].value)">
         <option value="document.util.mustt.value=(Math.round((Number(document.util.mustt.value)-32)*5/9*100)/100)"> Celsius </option>
         <option value="document.util.mustt.value=(Math.round((Number(document.util.mustt.value)*9/5+32)*100)/100)" selected="selected"> Fahrenheit</option>
    </select>
  </td>
 </tr>
 <tr>
  <td align="LEFT" bgcolor="#BBEEEE">
  <input name="targgrav_cb" onclick="" type="checkbox">
  <b> Target Gravity </b> <br>
  <input name="targgrav_t" value="1.108" size="10" onchange="i_updateAlc()" type="TEXT">
  <select name="targgrav_s" onchange="i_updateSG(document.util.targgrav_s,document.util.targgrav_t);">
    <option selected="selected" value="0"> SG </option>
    <option value="1"> BRIX </option>
    <option value="2"> Baume </option>
  </select>
  <br>
  <input name="targpa_t" value="14.13" size="10" onchange="i_updateGrav()" type="TEXT">
  <select name="targpa_s" onchange="i_updatePA(this.selectedIndex,document.util.targpa_t);">
    <option selected="selected"> %ABV </option>
    <option> %ABW </option>
  </select>
  </td>
  <td valign="TOP" align="LEFT" bgcolor="#BBEEEE">
  <input name="targvol_cb" onclick="" type="checkbox">
  <b> Target Volume </b> <br>
  <input name="targvol_t" value="5.0" size="10" onkeyup="document.util.vol_valt.value=document.util.targvol_t.value" type="TEXT">
  <select name="targvol_s" onchange="i_updateVol(document.util.targvol_s,document.util.targvol_t,document.util.vol_settingt,document.util.vol_valt)">
      <option value="1.0"> Litre(s) </option>
      <option value="3.7854117891" selected="selected"> Gallon(s) US </option>
      <option value="4.546091886873"> Gallon(s) Imp </option>
      <option value="0.0295735295641118736222"> Fl Ounce(s) US </option>
      <option value="0.0284130742283722207737"> Fl Ounce(s) Imp </option>
      <option value="0.4731764727459200098390"> Pint(s) US </option>
      <option value="0.5682614845674444154745"> Pint(s) Imp </option>
      <option value="0.9463529454918400196781"> Quart(s) US </option>
      <option value="1.1365229691348888309489"> Quart(s) Imp </option>
      <option value="0.2365882363729600049195"> Cup(s) US </option>
      <option value="0.284130624982675667887"> Cup(s) Imp </option>
      <option value="0.25"> Cup(s) Metric </option>
  </select>
  </td>
 </tr>
 <tr>
  <td colspan="1">
    <!--  ADDITIONAL SUGARS #1   -->
    <table border="0" width="100%" bgcolor="#BBEEEE">
	<tbody><tr> <th colspan="3" align="LEFT">
      <input name="sugars1_cb" onclick="" type="checkbox">
      Additional Sugars #1
      </th>
	</tr>
    <tr>
      <td rowspan="3" width="5%"> &nbsp;
      </td>
      <td width="20%" align="RIGHT">
        Type:
      </td>
      <td width="80%">
       <select name="sugars1_s1" onchange="i_updateType(1)">
         <option selected="selected" value="79.6"> Honey </option>
         <option value="100"> Sugar </option>
         <option value="3.33"> Acerola </option>
         <option value="12.4"> Apple(s) </option>
         <option value="9.1"> Apricot(s) </option>
         <option value="39.8"> Apricots (dried) </option>
         <option value="15.5"> Banana(s) </option>
         <option value="8.0"> Blackberry </option>
         <option value="9.8"> Blueberry </option>
         <option value="5.56"> Boysenberry </option>
         <option value="7.6"> Cantaloupe </option>
         <option value="4.33"> Carambola </option>
         <option value="4.44"> Carrot(s) </option>
         <option value="4.17"> Casaba Melon </option>
         <option value="6.67"> Cashew(s) </option>
         <option value="1.72"> Celery </option>
         <option value="14.2"> Cherry, dark sweet </option>
         <option value="7.9"> Cherry, Montmorency </option>
         <option value="8.56"> Crabapple(s) </option>
         <option value="4.17"> Cranberry </option>
         <option value="9.3"> Currant, black </option>
         <option value="6.0"> Currant, red </option>
         <option value="10.28"> Dates </option>
         <option value="64.2"> Dates (dried) </option>
         <option value="5.56"> Dewberry </option>
         <option value="6.11"> Elderberry </option>
         <option value="11.8"> Fig(s) </option>
         <option value="66.5"> Figs (dried) </option>
         <option value="11.0"> Gooseberry </option>
         <option value="8.89"> Grape, concord </option>
         <option value="15.9"> Grape(s) </option>
         <option value="6.1"> Grapefruit </option>
         <option value="8.89"> Guanabana </option>
         <option value="6.2"> Guava(s) </option>
         <option value="10"> Honeydew Melon </option>
         <option value="18.4"> Jackfruit </option>
         <option value="12.8"> Kiwi(s) </option>
         <option value="2.2"> Lemon juice </option>
         <option value="1.0"> Lime juice </option>
         <option value="17.0"> Lychee (Litchi) </option>
         <option value="5.83"> Loganberry </option>
         <option value="11.4"> Mango(s) </option>
         <option value="66.2"> Maple Syrup </option>
         <option value="2.0"> Maple Sap </option>
         <option value="13.5"> Mulberry </option>
         <option value="7.5"> Nectarine(s) </option>
         <option value="10.7"> Orange juice </option>
         <option value="6.39"> Papaya </option>
         <option value="11.1"> Passionfruit </option>
         <option value="8.8"> Peach(es) </option>
         <option value="10.1"> Pear(s) </option>
         <option value="14.0"> Persimmon </option>
         <option value="12.0"> Pineapple(s) </option>
         <option value="9.8"> Plum(s) </option>
         <option value="11.6"> Pomegranate(s) </option>
         <option value="11"> Prickly Pear </option>
         <option value="44.0"> Prunes (dried) </option>
         <option value="1.0"> Quince(s) </option>
         <option value="65"> Raisins (dried) </option>
         <option value="6.17"> Raspberry, black </option>
         <option value="5.11"> Raspberry, red </option>
         <option value="0.9"> Rhubarb </option>
         <option value="6.6"> Strawberry </option>
         <option value="19.0"> Sultanas </option>
         <option value="6.56"> Tangerine(s) </option>
         <option value="7.4"> Tangelo </option>
         <option value="2.78"> Tomato(s) </option>
         <option value="9.0"> Watermelon(s) </option>
         <option value="5.56"> Youngberry </option>
       </select>
      </td>
    </tr>
    <tr>
      <td align="RIGHT">
        Quantity:
      </td>
      <td>
       <input name="sugars1_t2" value="15" size="10" type="TEXT">
       <select name="sugars1_s2" onchange="i_updateQuant(1)">
          <!-- Value of OPTION is conversion to pounds factor  -->
         <option value="1.0"> Kilogram(s) </option>   
         <option value="0.45359237038" selected="selected"> Pound(s) </option>
         <option value="1.4379171305280134085"> Litre(s) </option> 
         <option value="5.44310844456453957639"> Gallon(s) US </option>
         <option value="6.5369033865223141589149"> Gallon(s) Imp </option>
         <option value="0.0283499767411440240053"> Ounce(s) </option>
         <option value="0.3401942777852837235244"> Cup(s) US </option>
         <option value="0.4085562923813757040209"> Cup(s) Imp </option>
         <option value="0.3594792822521458326230"> Cup(s) Metric </option>
         <option value="0.0425242847231604654406"> Fl Ounce(s) US  </option>
         <option value="0.0408556461657641887027"> Fl Ounce(s) Imp </option>
         <option value="0.6803885555705674470491"> Pint(s) US </option>
         <option value="0.8171129233152837740547"> Pint(s) Imp </option>
         <option value="1.3607771111411348940981"> Quart(s) US </option>
         <option value="1.6342258466305675481094"> Quart(s) Imp </option>
       </select>
      </td>
    </tr>
    <tr>
      <td align="RIGHT">
        Sugars Content:
      </td>
      <td>
       <input name="sugars1_t3" value="79.6" size="10" type="TEXT"> % 
      </td>
    </tr>
    </tbody></table>
    <!--  ADDITIONAL SUGARS #2   -->
    <table border="0" width="100%">
    <tbody><tr> <th colspan="3" align="LEFT">
      <input name="sugars2_cb" onclick="" type="checkbox">
      Additional Sugars #2  (Optional)
      </th>
	</tr>
    <tr>
      <td rowspan="3" width="5%"> &nbsp;
      </td>
      <td width="20%" align="RIGHT">
        Type:
      </td>
      <td width="80%">
       <select name="sugars2_s1" onchange="i_updateType(2)">
         <option selected="selected" value="79.6"> Honey </option>
         <option value="100"> Sugar </option>
         <option value="3.33"> Acerola </option>
         <option value="12.4"> Apple(s) </option>
         <option value="9.1"> Apricot(s) </option>
         <option value="39.8"> Apricots (dried) </option>
         <option value="15.5"> Banana(s) </option>
         <option value="8.0"> Blackberry </option>
         <option value="9.8"> Blueberry </option>
         <option value="5.56"> Boysenberry </option>
         <option value="7.6"> Cantaloupe </option>
         <option value="4.33"> Carambola </option>
         <option value="4.44"> Carrot(s) </option>
         <option value="4.17"> Casaba Melon </option>
         <option value="6.67"> Cashew(s) </option>
         <option value="1.72"> Celery </option>
         <option value="14.2"> Cherry, dark sweet </option>
         <option value="7.9"> Cherry, Montmorency </option>
         <option value="8.56"> Crabapple(s) </option>
         <option value="4.17"> Cranberry </option>
         <option value="9.3"> Currant, black </option>
         <option value="6.0"> Currant, red </option>
         <option value="10.28"> Dates </option>
         <option value="64.2"> Dates (dried) </option>
         <option value="5.56"> Dewberry </option>
         <option value="6.11"> Elderberry </option>
         <option value="11.8"> Fig(s) </option>
         <option value="66.5"> Figs (dried) </option>
         <option value="11.0"> Gooseberry </option>
         <option value="8.89"> Grape, concord </option>
         <option value="15.9"> Grape(s) </option>
         <option value="6.1"> Grapefruit </option>
         <option value="8.89"> Guanabana </option>
         <option value="6.2"> Guava(s) </option>
         <option value="10"> Honeydew Melon </option>
         <option value="18.4"> Jackfruit </option>
         <option value="12.8"> Kiwi(s) </option>
         <option value="2.2"> Lemon juice </option>
         <option value="1.0"> Lime juice </option>
         <option value="17.0"> Lychee (Litchi) </option>
         <option value="5.83"> Loganberry </option>
         <option value="11.4"> Mango(s) </option>
         <option value="66.2"> Maple Syrup </option>
         <option value="2.0"> Maple Sap </option>
         <option value="13.5"> Mulberry </option>
         <option value="7.5"> Nectarine(s) </option>
         <option value="10.7"> Orange juice </option>
         <option value="6.39"> Papaya </option>
         <option value="11.1"> Passionfruit </option>
         <option value="8.8"> Peach(es) </option>
         <option value="10.1"> Pear(s) </option>
         <option value="14.0"> Persimmon </option>
         <option value="12.0"> Pineapple(s) </option>
         <option value="9.8"> Plum(s) </option>
         <option value="11.6"> Pomegranate(s) </option>
         <option value="11"> Prickly Pear </option>
         <option value="44.0"> Prunes (dried) </option>
         <option value="1.0"> Quince(s) </option>
         <option value="65"> Raisins (dried) </option>
         <option value="6.17"> Raspberry, black </option>
         <option value="5.11"> Raspberry, red </option>
         <option value="0.9"> Rhubarb </option>
         <option value="6.6"> Strawberry </option>
         <option value="19.0"> Sultanas </option>
         <option value="6.56"> Tangerine(s) </option>
         <option value="7.4"> Tangelo </option>
         <option value="2.78"> Tomato(s) </option>
         <option value="9.0"> Watermelon(s) </option>
         <option value="5.56"> Youngberry </option>
       </select>
      </td>
    </tr>
    <tr>
      <td align="RIGHT">
        Quantity:
      </td>
      <td>
       <input name="sugars2_t2" value="0" size="10" type="TEXT">
       <select name="sugars2_s2" onchange="i_updateQuant(2)">
          <!-- Value of OPTION is conversion to pounds factor  -->
         <option value="1.0"> Kilogram(s) </option>   
         <option value="0.45359237038" selected="selected"> Pound(s) </option>
         <option value="1.4379171305280134085"> Litre(s) </option> 
         <option value="5.44310844456453957639"> Gallon(s) US </option>
         <option value="6.5369033865223141589149"> Gallon(s) Imp </option>
         <option value="0.0283499767411440240053"> Ounce(s) </option>
         <option value="0.3401942777852837235244"> Cup(s) US </option>
         <option value="0.4085562923813757040209"> Cup(s) Imp </option>
         <option value="0.3594792822521458326230"> Cup(s) Metric </option>
         <option value="0.0425242847231604654406"> Fl Ounce(s) US  </option>
         <option value="0.0408556461657641887027"> Fl Ounce(s) Imp </option>
         <option value="0.6803885555705674470491"> Pint(s) US </option>
         <option value="0.8171129233152837740547"> Pint(s) Imp </option>
         <option value="1.3607771111411348940981"> Quart(s) US </option>
         <option value="1.6342258466305675481094"> Quart(s) Imp </option>
       </select>
      </td>
    </tr>
    <tr>
      <td align="RIGHT">
        Sugars Content:
      </td>
      <td>
       <input name="sugars2_t3" value="79.6" size="10" type="TEXT"> % 
      </td>
    </tr>
    </tbody></table> <!-- End of Sugars2  -->
   </td>
   <td>
    <!--  ADDITIONAL SUGARS #3   -->
    <table border="0" width="100%">
	<tbody><tr> <th colspan="3" align="LEFT">
      <input name="sugars3_cb" onclick="" type="checkbox">
      Additional Sugars #3  (Optional)
      </th>
	</tr>
    <tr>
      <td rowspan="3" width="5%"> &nbsp;
      </td>
      <td width="20%" align="RIGHT">
        Type:
      </td>
      <td width="80%">
       <select name="sugars3_s1" onchange="i_updateType(3)">
         <option selected="selected" value="79.6"> Honey </option>
         <option value="100"> Sugar </option>
         <option value="3.33"> Acerola </option>
         <option value="12.4"> Apple(s) </option>
         <option value="9.1"> Apricot(s) </option>
         <option value="39.8"> Apricots (dried) </option>
         <option value="15.5"> Banana(s) </option>
         <option value="8.0"> Blackberry </option>
         <option value="9.8"> Blueberry </option>
         <option value="5.56"> Boysenberry </option>
         <option value="7.6"> Cantaloupe </option>
         <option value="4.33"> Carambola </option>
         <option value="4.44"> Carrot(s) </option>
         <option value="4.17"> Casaba Melon </option>
         <option value="6.67"> Cashew(s) </option>
         <option value="1.72"> Celery </option>
         <option value="14.2"> Cherry, dark sweet </option>
         <option value="7.9"> Cherry, Montmorency </option>
         <option value="8.56"> Crabapple(s) </option>
         <option value="4.17"> Cranberry </option>
         <option value="9.3"> Currant, black </option>
         <option value="6.0"> Currant, red </option>
         <option value="10.28"> Dates </option>
         <option value="64.2"> Dates (dried) </option>
         <option value="5.56"> Dewberry </option>
         <option value="6.11"> Elderberry </option>
         <option value="11.8"> Fig(s) </option>
         <option value="66.5"> Figs (dried) </option>
         <option value="11.0"> Gooseberry </option>
         <option value="8.89"> Grape, concord </option>
         <option value="15.9"> Grape(s) </option>
         <option value="6.1"> Grapefruit </option>
         <option value="8.89"> Guanabana </option>
         <option value="6.2"> Guava(s) </option>
         <option value="10"> Honeydew Melon </option>
         <option value="18.4"> Jackfruit </option>
         <option value="12.8"> Kiwi(s) </option>
         <option value="2.2"> Lemon juice </option>
         <option value="1.0"> Lime juice </option>
         <option value="17.0"> Lychee (Litchi) </option>
         <option value="5.83"> Loganberry </option>
         <option value="11.4"> Mango(s) </option>
         <option value="66.2"> Maple Syrup </option>
         <option value="2.0"> Maple Sap </option>
         <option value="13.5"> Mulberry </option>
         <option value="7.5"> Nectarine(s) </option>
         <option value="10.7"> Orange juice </option>
         <option value="6.39"> Papaya </option>
         <option value="11.1"> Passionfruit </option>
         <option value="8.8"> Peach(es) </option>
         <option value="10.1"> Pear(s) </option>
         <option value="14.0"> Persimmon </option>
         <option value="12.0"> Pineapple(s) </option>
         <option value="9.8"> Plum(s) </option>
         <option value="11.6"> Pomegranate(s) </option>
         <option value="11"> Prickly Pear </option>
         <option value="44.0"> Prunes (dried) </option>
         <option value="1.0"> Quince(s) </option>
         <option value="65"> Raisins (dried) </option>
         <option value="6.17"> Raspberry, black </option>
         <option value="5.11"> Raspberry, red </option>
         <option value="0.9"> Rhubarb </option>
         <option value="6.6"> Strawberry </option>
         <option value="19.0"> Sultanas </option>
         <option value="6.56"> Tangerine(s) </option>
         <option value="7.4"> Tangelo </option>
         <option value="2.78"> Tomato(s) </option>
         <option value="9.0"> Watermelon(s) </option>
         <option value="5.56"> Youngberry </option>
       </select>
      </td>
    </tr>
    <tr>
      <td align="RIGHT">
        Quantity:
      </td>
      <td>
       <input name="sugars3_t2" value="0" size="10" type="TEXT">
       <select name="sugars3_s2" onchange="i_updateQuant(3)">
          <!-- Value of OPTION is conversion to pounds factor  -->
         <option value="1.0"> Kilogram(s) </option>   
         <option value="0.45359237038" selected="selected"> Pound(s) </option>
         <option value="1.4379171305280134085"> Litre(s) </option> 
         <option value="5.44310844456453957639"> Gallon(s) US </option>
         <option value="6.5369033865223141589149"> Gallon(s) Imp </option>
         <option value="0.0283499767411440240053"> Ounce(s) </option>
         <option value="0.3401942777852837235244"> Cup(s) US </option>
         <option value="0.4085562923813757040209"> Cup(s) Imp </option>
         <option value="0.3594792822521458326230"> Cup(s) Metric </option>
         <option value="0.0425242847231604654406"> Fl Ounce(s) US  </option>
         <option value="0.0408556461657641887027"> Fl Ounce(s) Imp </option>
         <option value="0.6803885555705674470491"> Pint(s) US </option>
         <option value="0.8171129233152837740547"> Pint(s) Imp </option>
         <option value="1.3607771111411348940981"> Quart(s) US </option>
         <option value="1.6342258466305675481094"> Quart(s) Imp </option>
       </select>
      </td>
    </tr>
    <tr>
      <td align="RIGHT">
        Sugars Content:
      </td>
      <td>
       <input name="sugars3_t3" value="79.6" size="10" type="TEXT"> % 
      </td>
    </tr>
    </tbody></table>
    <!--  ADDITIONAL SUGARS #4   -->
    <table border="0" width="100%">
    <tbody><tr> <th colspan="3" align="LEFT">
      <input name="sugars4_cb" onclick="" type="checkbox">
      Additional Sugars #4  (Optional)
      </th>
	</tr>
    <tr>
      <td rowspan="3" width="5%"> &nbsp;
      </td>
      <td width="20%" align="RIGHT">
        Type:
      </td>
      <td width="80%">
       <select name="sugars4_s1" onchange="i_updateType(4)">
         <option selected="selected" value="79.6"> Honey </option>
         <option value="100"> Sugar </option>
         <option value="3.33"> Acerola </option>
         <option value="12.4"> Apple(s) </option>
         <option value="9.1"> Apricot(s) </option>
         <option value="39.8"> Apricots (dried) </option>
         <option value="15.5"> Banana(s) </option>
         <option value="8.0"> Blackberry </option>
         <option value="9.8"> Blueberry </option>
         <option value="5.56"> Boysenberry </option>
         <option value="7.6"> Cantaloupe </option>
         <option value="4.33"> Carambola </option>
         <option value="4.44"> Carrot(s) </option>
         <option value="4.17"> Casaba Melon </option>
         <option value="6.67"> Cashew(s) </option>
         <option value="1.72"> Celery </option>
         <option value="14.2"> Cherry, dark sweet </option>
         <option value="7.9"> Cherry, Montmorency </option>
         <option value="8.56"> Crabapple(s) </option>
         <option value="4.17"> Cranberry </option>
         <option value="9.3"> Currant, black </option>
         <option value="6.0"> Currant, red </option>
         <option value="10.28"> Dates </option>
         <option value="64.2"> Dates (dried) </option>
         <option value="5.56"> Dewberry </option>
         <option value="6.11"> Elderberry </option>
         <option value="11.8"> Fig(s) </option>
         <option value="66.5"> Figs (dried) </option>
         <option value="11.0"> Gooseberry </option>
         <option value="8.89"> Grape, concord </option>
         <option value="15.9"> Grape(s) </option>
         <option value="6.1"> Grapefruit </option>
         <option value="8.89"> Guanabana </option>
         <option value="6.2"> Guava(s) </option>
         <option value="10"> Honeydew Melon </option>
         <option value="18.4"> Jackfruit </option>
         <option value="12.8"> Kiwi(s) </option>
         <option value="2.2"> Lemon juice </option>
         <option value="1.0"> Lime juice </option>
         <option value="17.0"> Lychee (Litchi) </option>
         <option value="5.83"> Loganberry </option>
         <option value="11.4"> Mango(s) </option>
         <option value="66.2"> Maple Syrup </option>
         <option value="2.0"> Maple Sap </option>
         <option value="13.5"> Mulberry </option>
         <option value="7.5"> Nectarine(s) </option>
         <option value="10.7"> Orange juice </option>
         <option value="6.39"> Papaya </option>
         <option value="11.1"> Passionfruit </option>
         <option value="8.8"> Peach(es) </option>
         <option value="10.1"> Pear(s) </option>
         <option value="14.0"> Persimmon </option>
         <option value="12.0"> Pineapple(s) </option>
         <option value="9.8"> Plum(s) </option>
         <option value="11.6"> Pomegranate(s) </option>
         <option value="11"> Prickly Pear </option>
         <option value="44.0"> Prunes (dried) </option>
         <option value="1.0"> Quince(s) </option>
         <option value="65"> Raisins (dried) </option>
         <option value="6.17"> Raspberry, black </option>
         <option value="5.11"> Raspberry, red </option>
         <option value="0.9"> Rhubarb </option>
         <option value="6.6"> Strawberry </option>
         <option value="19.0"> Sultanas </option>
         <option value="6.56"> Tangerine(s) </option>
         <option value="7.4"> Tangelo </option>
         <option value="2.78"> Tomato(s) </option>
         <option value="9.0"> Watermelon(s) </option>
         <option value="5.56"> Youngberry </option>
       </select>
      </td>
    </tr>
    <tr>
      <td align="RIGHT">
        Quantity:
      </td>
      <td>
       <input name="sugars4_t2" value="0" size="10" type="TEXT">
       <select name="sugars4_s2" onchange="i_updateQuant(4)">
          <!-- Value of OPTION is conversion to pounds factor  -->
         <option value="1.0"> Kilogram(s) </option>   
         <option value="0.45359237038" selected="selected"> Pound(s) </option>
         <option value="1.4379171305280134085"> Litre(s) </option> 
         <option value="5.44310844456453957639"> Gallon(s) US </option>
         <option value="6.5369033865223141589149"> Gallon(s) Imp </option>
         <option value="0.0283499767411440240053"> Ounce(s) </option>
         <option value="0.3401942777852837235244"> Cup(s) US </option>
         <option value="0.4085562923813757040209"> Cup(s) Imp </option>
         <option value="0.3594792822521458326230"> Cup(s) Metric </option>
         <option value="0.0425242847231604654406"> Fl Ounce(s) US  </option>
         <option value="0.0408556461657641887027"> Fl Ounce(s) Imp </option>
         <option value="0.6803885555705674470491"> Pint(s) US </option>
         <option value="0.8171129233152837740547"> Pint(s) Imp </option>
         <option value="1.3607771111411348940981"> Quart(s) US </option>
         <option value="1.6342258466305675481094"> Quart(s) Imp </option>
       </select>
      </td>
    </tr>
    <tr>
      <td align="RIGHT">
        Sugars Content:
      </td>
      <td>
       <input name="sugars4_t3" value="79.6" size="10" type="TEXT"> % 
      </td>
    </tr>
    </tbody></table>
  </td>
 </tr>
 <tr align="LEFT" bgcolor="#DADADA">
  <td>
    <!-- INPUT TYPE="checkbox" NAME="currgrav_cb" -->
    <b> Current Gravity </b> (optional) <br>
    <input name="currgrav_t" value="1.000" size="10" onkeyup="i_updateAlc()" type="TEXT">
    <select name="currgrav_s" onchange="i_updateSG(document.util.currgrav_s,document.util.currgrav_t);">
        <!--  NOTE:  conversion formula TO SG is the value of the option -->
      <option selected="selected" value="0"> SG 
      </option><option value="1"> BRIX
      </option><option value="2"> Baume
     </option></select>
  </td>
  <td align="LEFT"> 
    <b> Current Volume </b> (optional) <br>
    <input name="currvol_t" value="0" size="10" onkeyup="document.util.vol_valc.value=document.util.currvol_t.value" type="TEXT">
    <select name="currvol_s" onchange="i_updateVol(document.util.currvol_s,document.util.currvol_t,document.util.vol_settingc,document.util.vol_valc)">
      <option value="1.0"> Litre(s) </option>
      <option value="3.7854117891" selected="selected"> Gallon(s) US </option>
      <option value="4.546091886873"> Gallon(s) Imp </option>
      <option value="0.0295735295641118736222"> Fl Ounce(s) US </option>
      <option value="0.0284130742283722207737"> Fl Ounce(s) Imp </option>
      <option value="0.4731764727459200098390"> Pint(s) US </option>
      <option value="0.5682614845674444154745"> Pint(s) Imp </option>
      <option value="0.9463529454918400196781"> Quart(s) US </option>
      <option value="1.1365229691348888309489"> Quart(s) Imp </option>
      <option value="0.2365882363729600049195"> Cup(s) US </option>
      <option value="0.284130624982675667887"> Cup(s) Imp </option>
      <option value="0.25"> Cup(s) Metric </option>
    </select>
   </td>
 </tr>
 <tr>
  <td colspan="1" align="LEFT">
    <input name="reset" value="Reset Values" type="reset"> &nbsp; &nbsp;
    <input name="calc" value="Calculate" onclick="i_updateStats()" type="button">
  </td>
  <td colspan="1" align="LEFT">
    <input name="help" value="Help Page" onclick="window.open('http://www.gotmead.com/index.php?option=com_content&amp;task=view&amp;id=1988&amp;Itemid=630')" type="button">
  </td>
 </tr>
</tbody></table>   <!--  END OF BATCH  and START OF PA CALC  -->
<p>
</p><table class="bordercolor" border="1" cellpadding="3" bgcolor="#DDFFDD">
 <tbody><tr> <th colspan="2">
  Potential Alcohol Conversion <br>
 </th>
 </tr>
 <tr align="CENTER"> <td>   
<select name="sgOrigConv_s" onchange="i_translateSG(document.util.sgOrigConv_setting);">
                 <option selected="selected" value="0"> SG </option>
                 <option value="1"> BRIX </option>
                 <option value="2"> Baume </option>
              </select>
</td>
<td>
    <select name="paconv_s" onchange="i_updateABVorABW(this.selectedIndex);">
      <option selected="selected"> %ABV </option>
      <option> %ABW </option>
    </select>
</td>
 </tr>
 <tr align="CENTER">
  <td>
    <table>
        <tbody><tr>
          <td>Original <span id="grav1">Gravity:</span> </td> 
          <td> <input name="sgOrigConv_t" value="1.108" size="6" onchange="i_updateVals(1); i_changePA(1);" type="TEXT"> </td>
          <td>
             
          </td>
        </tr>
        <tr><td>Final <span id="grav2">Gravity:</span> </td> 
          <td> <input name="sgFinConv_t" value="0.998" size="6" onchange="i_updateVals(2); i_changePA(2);" type="TEXT"> </td>
        </tr>
    </tbody></table>
  </td>
  <td>
    <input name="paconv_t" value="14.37" size="6" onchange="i_updateVals(3); i_changeSG();" type="TEXT">
  </td>
 </tr>
</tbody></table>

<p>  <!-- END OF PA CONVERSION    START OF BLENDING CLACULATOR  -->
</p><table class="bordercolor" border="1" cellpadding="2" bgcolor="#FFDDDD">
 <tbody><tr> <th colspan="3">
  Blending Calculation Utility
 </th>
 </tr>
 <tr>
  <td colspan="3" align="CENTER">
  <small> <i> 
    <b>Enter 4 or 5 values, then <br> click which result is required.</b> <br>
	The blended Value must be between Value#1 and Value#2.
   </i></small>
  </td>
 </tr>
 <tr> 
  <td colspan="3" align="CENTER">
     <i>Units:</i>
     <input name="blend_label" onclick="i_changeLabel(1);" type="radio">SG
     <input name="blend_label" onclick="i_changeLabel(2);" type="radio">BRIX
     <input name="blend_label" onclick="i_changeLabel(3);" type="radio">Baume
     <input name="blend_label" onclick="i_changeLabel(4);" type="radio">%ABV
     <input name="blend_label" onclick="i_changeLabel(5);" type="radio">%ABW
     <input name="blend_label" checked="checked" onclick="i_changeLabel(6);" type="radio">Other
  </td>
 </tr>
 <tr>
  <td colspan="1" width="30%" align="CENTER">
    <span id="b1">Value #1</span> <br> 
    <input name="blend_r" onclick="document.util.blend_val1.value=''" type="radio"> 
	<input name="blend_val1" value="11" size="5" type="TEXT">
  </td>
  <td width="40%" align="CENTER"> <span id="blend_msg" style="color: #ff0000;">&nbsp;</span>
  </td>
  <td colspan="1" width="30%" align="CENTER">
    Volume #1 <br> 
    <input name="blend_r" onclick="document.util.blend_vol1.value=''" type="radio"> 
    <input name="blend_vol1" value="3" size="5" type="TEXT">
  </td>
 </tr>
 <tr>
  <td colspan="1" align="CENTER"> &nbsp;
  </td>
  <td align="CENTER"> 
    <span id="bres">Blended Value</span> <br> 
    <input name="blend_r" onclick="document.util.blend_res.value=''" type="radio"> 
	<input name="blend_res" value="12" size="5" type="TEXT">
  </td>
  <td colspan="1" align="CENTER"> &nbsp;
  </td>
 </tr>
  <tr><td colspan="1" align="CENTER">
    <span id="b2">Value #2</span> <br> 
    <input name="blend_r" onclick="document.util.blend_val2.value=''" type="radio"> 
	<input name="blend_val2" value="15" size="5" type="TEXT">
  </td>
  <td> &nbsp;
  </td>
  <td colspan="1" align="CENTER">
    Volume #2 <br> 
    <input name="blend_r" onclick="document.util.blend_vol2.value=''" type="radio"> 
    <input name="blend_vol2" size="5" type="TEXT">
  </td>
 </tr>
  <tr><td colspan="1" align="CENTER">
     <input name="reset" value="Reset Values" type="reset">
  </td>
  <td align="CENTER"> 
     <input name="blend_clr" value="Clear Inputs" onclick="i_blendClear();" type="BUTTON">
  </td>
  <td colspan="1" align="CENTER">
    Total Volume <br> 
    <input name="blend_r" type="radio">  <!-- no clearing of click so can have selected totvol plus a value -->
    <input name="blend_totvol" size="5" type="TEXT">
  </td>
 </tr>
</tbody></table>

<script language="Javascript">

   var theForm = document.util;  // used to reference DOM elements

   //
   // g e t S e l e c t e d V a l u e ( )
   //
   //  return the index of the selection
   //
   function getSelectedValue(xitem) {
	if (xitem.selectedIndex >= xitem.length)
		return -1;
	return (xitem.selectedIndex);
   }

   //
   //  L e f t ( ) 
   //    return the n left most chars of a string
   //
   function Left(str, n){
	if (n <= 0)
	    return "";
	else if (n > String(str).length)
	    return str;
	else
	    return String(str).substring(0,n);
   }
   //
   //  R i g h t ( ) 
   //    return the n right most chars of a string
   //
   function Right(str, n){
    if (n <= 0) {
       return "";
    } else if (n > String(str).length) {
       return str;
    } else {
       var iLen = String(str).length;
       return String(str).substring(iLen, iLen - n);
    }
   }
   //
   // d i s p l a y N u m b e r ( )
   //  display val to sigFigures zero-filled significant figures 
   //   ie 10 becomes 10.000 if sigFigures is 3
   //
   function displayNumber(val,sigFigures) {
      var neg = (Number(val) < 0) ? '-' : '';
      var i = Math.floor(Math.round(Math.pow(10,sigFigures)*Number(Math.abs(val)))/Math.pow(10,sigFigures));
      var x = Right(("000" + Math.round(Math.pow(10,sigFigures) * (Math.abs(Number(val)) - Math.abs(i)))), sigFigures);
      return (Number(neg + i + "." + x));
   }

   //
   // d i s p l a y N r T r i m ( )
   //  display val to sigFigures significant figures if non-zero significant figures
   //   ie 10.12345 becomes 10.123 if sigFigures is 3
   //   ie 10.00012 becomes 10     if sigFigures is 3
   //
   function displayNrTrim(val,sigFigures) {
	  v = displayNumber(val,sigFigures) - Math.floor(Number(val));
      
	  for (var j=sigFigures; j>0; j--) {
	     if (v[j] != '0') {
		    break;
		 }
		 v[j] = '';  // blank out trailing zeros
	  }
	  return ( Math.floor(Number(val))+Number(v) );
   }

   //
   //  S G T o B a u m e  ( )
   //
   function SGToBaume(SG) {
      return (145-145/Number(SG));
   }

   //
   //  B a u m e T o S G ( )
   //
   function BaumeToSG(Baume) {
      return (145/(145-Baume));
   }

   //
   //  S G T o B r i x  ( )
   //
   function SGToBrix(SG) {
      var x = 135.997*Math.pow(Number(SG),3)-630.272*Math.pow(Number(SG),2)+1111.14*Number(SG)-616.868;
      return (x);
   }

   //
   //  B r i x T o S G ( )
   //
   function BrixToSG(Brix) {
      var x = 1.00001 + (Number(Brix)/(258.6-0.89*Number(Brix)));
      return (x);
   }

   //
   //  S G T o A B V  ( )
   //
   //  Baume IS ABV  (approximately, if no too many dissolved solids)
   //
   function SGToABV(SG) {
      return ( SGToBaume(SG) );
   }

   //
   //  S G T o A B W  ( )
   //
   // SG -> ABV (Baume) -> ABW
   //
   function SGToABW(SG) {
      return ( ABVToABW(SGToBaume(SG)) );
   }

   //
   //  A B V T o A B W  ( )
   //
   function ABVToABW(ABV) {
      return ( ABV * 0.8 );
   }
   
   //
   //  A B V T o A B W  ( )
   //
   function ABWToABV(ABW) {
      return ( ABW / 0.8 );
   }

   //
   //  A B V T o S G  ( )   is baumeToSG()
   //
   function ABVToSG(ABV) {
      return ( BaumeToSG(ABV) );
   }

   //
   //  A B W T o S G  ( )   is baumeToSG()
   //
   function ABWToSG(ABW) {
      return ( ABVToSG(ABWToABV(ABW)) );
   }

   //
   // S G T o S u g a r C o n c ( )
   //
   //  give the g/L concentrate ratio for a given SG, using SG and Brix which is also calculated from the SG
   //
   function SGToSugarConc (SG) {
      return( Number( 4 + 10*SG*SGToBrix(SG) ) );
   }
   
   //
   //  s u g a r T o S G ( )
   //
   //  uses iterative brute force solving to guess SG from g/L weight of sugars
   //
   //  Accuracy is only to 3 decimal places
   //
   function sugarConcToSG(gPerL) {
      var i = 0;
	  var sg = 0.992;  // start at lowest and work up
	  var loopLimit = 100000;
	  var gpl = 0;    // calculated g/L to compare with gPerL
	  var diff = 0;   // difference from calc gpl to required gpl
	  
	  for (i=0;i<loopLimit; i++) {
	     gpl = SGToSugarConc(sg);
		 if (Math.round(gpl,10) == Math.round(gPerL,10)) {
		    return (sg);
		 }
		 // scale by number of integer digits + 2, ie gpl of 312.45 means scale of 5 decimal points => 0.00001
		 diff = Math.pow(10,-1*(2 + String(Math.round(gpl,0)).length));
		 sg = sg*(1+diff);
	  }
	  return(NaN);
   }
   
   //
   //  A B V T o A B W  ( )
   //
   function ABWToABV(ABW) {
      return ( ABW / 0.8 );
   }

   //
   //  c o n v T o S G ( )
   //  Potential Alc conversion:
   //
   //  normalising to the SG
   //   using the indx into sgOrigconv_s, calc the SG from the value in sgconv_t.value (val)
   //   index=1 is  BRIX to SG,  index=2 is Baume to SG else SG to SG
   //
   function convToSG(val, indx) {
      if (indx == 1) {
         // BRIX -> SG
         return(BrixToSG(val));
      }
      else
      if (indx == 2) {
         // Baume -> SG
         return(BaumeToSG(val));
      }
      else {
         // SG
         return (Number(val));
      }
   }
   //
   //  c o n v T o A B V ( )
   //  Potential Alc conversion:
   //
   //  normalising to the ABV
   //   using the indx into sgOrigconv_s, calc the SG from the value in sgconv_t.value (val)
   //   index=1 is  ABW to ABV, else ABV to ABV
   //
   function convToABV(val, indx) {
      if (indx == 1) {
         // ABW -> ABV
         var tmp = ABWToABV(Number(val));
         return(Number(tmp));
      }
      else {
         // ABV
         return (Number(val));
      }
   }
  
   //
   //  i __ u p d a t e V a l s ( )
   //  Potential Alc conversion:
   //
   //   update the hidden values from the recently changed display value
   //   Use these hidden values to avoid rounding errors
   //
   function i_updateVals(which) {

      if (which == 1) {  // Orig SG
         theForm.sgOrigConv_Val.value = theForm.sgOrigConv_t.value;
      }
      if (which == 2) {  // Final SG
         theForm.sgFinConv_Val.value = theForm.sgFinConv_t.value;
      }
      if (which == 3) {  // ABV/ABW
         theForm.sgABVConv_Val.value = theForm.paconv_t.value;
      }
   }

   //
   // c h a n g e G r a v T e x t ( )
   //  Potential Alc conversion:
   //
   //   change gravity text box lable to match selection
   //
   function changeGravText(which) {
     var x1 = document.getElementById("grav1");
     var x2 = document.getElementById("grav2");

     switch(which) {
       case 0:  // SG
         x1.innerHTML = "Gravity:";
         x2.innerHTML = "Gravity:";
         break;
       case 1:  // Brix
         x1.innerHTML = "BRIX:";
         x2.innerHTML = "BRIX:";
         break;
       case 2:  // Baume
         x1.innerHTML = "Baume:";
         x2.innerHTML = "Baume:";
         break;
      }
      return(0);
   }

   //
   // i __ t r a n s l a t e S G ( )
   //  Potential Alc conversion:
   //
   //  when change gravity type between SG/BRIX/Baume, then change the displayed value
   //
   function i_translateSG(from) {
      var xt = theForm.sgOrigConv_Val;   // hidden value
      var xs = theForm.sgOrigConv_s;
      var xt2 = theForm.sgFinConv_Val;   // hidden value
      var tmp = 0;
      var tmp2 = 0;

      // get previous gravity values as SG
      tmp  = convToSG(xt.value,  from.value);
      tmp2 = convToSG(xt2.value, from.value);

      // now convert from SG to the new measurement type
      var to = xs.selectedIndex;
      // save the selectedIndex ready to be the "from" for next time
      from.value = to;
      changeGravText(to);
      if (to == 1) {
         // SG -> BRIX
         xt.value = SGToBrix(tmp);
         theForm.sgOrigConv_t.value  = displayNumber(xt.value, 3);
         xt2.value = SGToBrix(tmp2);
         theForm.sgFinConv_t.value = displayNumber(xt2.value, 3);
      } else
      if (to == 2) {
         // SG -> Baume
         xt.value = SGToBaume(tmp);
         theForm.sgOrigConv_t.value  = displayNumber(xt.value, 3);
         xt2.value = SGToBaume(tmp2);
         theForm.sgFinConv_t.value = displayNumber(xt2.value, 3);
      } else {
	      // else SG -> SG
         xt.value = tmp;
         theForm.sgOrigConv_t.value  = displayNumber(xt.value,3);
         xt2.value = tmp2;
         theForm.sgFinConv_t.value = displayNumber(xt2.value,3);
	  }
   }

   //
   // i __ c h a n g e S G ( )
   //  Potential Alc conversion:
   //
   //  when PA changed by user, then change the displayed value of sgOrigConv_t
   //   leaving the sgFinConv_t unchanged
   //
   function i_changeSG() {
      var xt = theForm.sgOrigConv_Val;
      var xt2 = theForm.sgFinConv_Val;
      var pa = theForm.sgABVConv_Val;
      theForm.sgOrigConv_setting.value = theForm.sgOrigConv_s.selectedIndex;
      var from = theForm.sgOrigConv_setting;
      var tmp = 0;
      var tmp2 = 0;
      var sg = 0;

      // Convert PA to SG  because PA is the baume, and includes ABW to ABV to SG if necessary
      tmp = ABVToSG(convToABV(pa.value,theForm.paconv_s.selectedIndex));
      // get previous gravity values as SG
      tmp2 = convToSG(xt2.value, from.value);
      sg = Number(tmp) - Number(tmp2) + 1;   // the plus 1 is: 1 + (1.xxx - 1.yyy) = 1.zzz

      if (from.value == 1) {
         // SG to BRIX
         xt.value = SGToBrix(sg);
         theForm.sgOrigConv_t.value = displayNumber(xt.value, 3);
      } else
      if (from.value == 2) {
         // SG to Baume
         xt.value  = SGToBaume(sg);
         theForm.sgOrigConv_t.value = displayNumber(xt.value, 3);
      } else { 
	     // else SG to SG
         xt.value  = sg;
         theForm.sgOrigConv_t.value = displayNumber(xt.value, 3);
	  }
   }

   //
   // i __ c h a n g e P A ( )
   //  Potential Alc conversion:
   //
   //  Update the PA if changed one of the OG or FG values (SG)
   //
   function i_changePA() {
      var xt = theForm.sgOrigConv_Val;  // hidden field containing OrigGrav
      var xt2 = theForm.sgFinConv_Val;  // hidden field containing FinalGrav
      var from = theForm.sgOrigConv_setting;

      // get the Orig & Fin SG values, regardless of whether displayed as SG, Brix or Baume
      var tmp  = convToSG(xt.value,  from.value);
      var tmp2 = convToSG(xt2.value, from.value);
      var abv = SGToABV(1+Number(tmp)-Number(tmp2));
	  
	  // convert to ABW if required and display the value
	  if (theForm.paconv_s.selectedIndex == 1) {
  	     // save the accurate value to avoid rounding errors
         theForm.sgABVConv_Val.value = ABVToABW(abv);
		  // update the display
	     theForm.paconv_t.value = displayNumber(ABVToABW(abv),2);
	  } else {
  	     // save the accurate value to avoid rounding errors
         theForm.sgABVConv_Val.value = abv;
		  // update the display
	     theForm.paconv_t.value = displayNumber(abv,2);
	  }
   }

   //
   //  u p d a t e A B V o r A B W ( )
   //   PA Conversion Util
   // 
   // convert the displayed 
   //
   function i_updateABVorABW(which) {
      switch (which) {
	     case 0:  // ABW to ABV
           theForm.sgABVConv_Val.value = displayNumber(ABWToABV(theForm.sgABVConv_Val.value),3);
		    break;
		 case 1:  // ABV to ABW  
           theForm.sgABVConv_Val.value = displayNumber(ABVToABW(theForm.sgABVConv_Val.value),3);
		    break;
	  }
	  theForm.paconv_t.value = theForm.sgABVConv_Val.value;
   }
   
////////////////////////////////////////  End of PA Conversion //////////////////////////////////////
   
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////// Start of Mead Batch Util  //////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
   //
   //  i __ u p d a t e P A ( )
   //
   //  Update the text box (tbox.value) based on the selection (post selection) od the combo box,
   //   where selection is combobox.selectedIndex
   //
   function i_updatePA(selection,tbox) {
      switch (selection) {
	     case 0:  // ABW to ABV
           tbox.value = displayNumber(ABWToABV(tbox.value),3);
		    break;
		 case 1:  // ABV to ABW  
           tbox.value = displayNumber(ABVToABW(tbox.value),3);
		    break;
	  }
	  // update the4 PA CALC util to match
	  theForm.paconv_s.selectedIndex = selection;
      i_updateABVorABW(selection);
	  return (tbox.value);
   }



   //
   // g e t S u g a r s (  )
   //  returns pounds of sugar
   //
   function getSugars(which) {
      var i = 0;

      if (which == 1) {  // sugars#1
         // amount * conversion to pounds * percentage sugar
         i = theForm.sugars1_t2.value * theForm.sugars1_s2.options[theForm.sugars1_s2.selectedIndex].value * theForm.sugars1_t3.value/100;
      } else
      if (which == 2) {  // sugars#2
         // amount * conversion to pounds * percentage sugar
         i = theForm.sugars2_t2.value * theForm.sugars2_s2.options[theForm.sugars2_s2.selectedIndex].value * theForm.sugars2_t3.value/100;
      } else
      if (which == 3) {  // sugars#3
         // amount * conversion to pounds * percentage sugar
         i = theForm.sugars3_t2.value * theForm.sugars3_s2.options[theForm.sugars3_s2.selectedIndex].value * theForm.sugars3_t3.value/100;
      } else
      if (which == 4) {  // sugars#4
         // amount * conversion to pounds * percentage sugar
         i = theForm.sugars4_t2.value * theForm.sugars4_s2.options[theForm.sugars4_s2.selectedIndex].value * theForm.sugars4_t3.value/100;
      }
      return(i);
   }

   //
   //
   //
   function bit_and (p1, p2) {
      return eval(p1+" "+"&"+" "+p2);
   }

   //
   // u p d a t e S t a t s  (  )
   //
   // determine which entries need to be computed & update them
   //
   function i_updateStats() {
      var vMask = 0;
      var vSugar = 0;
      var vCSg  = Number(toSG(theForm.currgrav_s.selectedIndex, theForm.currgrav_s, theForm.currgrav_t));
      var vCVol = Number(toVol(theForm.currvol_s.selectedIndex, theForm.currvol_s, theForm.vol_valc));
      var vTSg  = Number(toSG(theForm.targgrav_s.selectedIndex, theForm.targgrav_s, theForm.targgrav_t));
      var vTVol = Number(toVol(theForm.targvol_s.selectedIndex, theForm.targvol_s, theForm.vol_valt));

      i_updateAlc();
      //
      // Identify which item to be updated (checkbox is unchecked)
      //
//      if (theForm.currgrav_cb.checked) {   // current Gravity checked
//         vMask += 1;
//      }
//      if (theForm.currvol_cb.checked) {   // current Volume checked
//         mymask += 2;
//      }
      if (theForm.targgrav_cb.checked) {   // target Gravity checked
         vMask += 4;
      }
      if (theForm.targvol_cb.checked) {   // target Volume checked
         vMask += 8;
      }
      if (theForm.sugars1_cb.checked) {   // Sugars#1 checked
         vMask += 16;
         // Calculate the Sugars
         vSugar = getSugars(1);
      }
      if (theForm.sugars2_cb.checked) {   // Sugars#2 checked
         vMask += 32;
         // Calculate the Sugars
         vSugar += getSugars(2);
      }
      if (theForm.sugars3_cb.checked) {   // Sugars#3 checked
         vMask += 64;
         // Calculate the Sugars
         vSugar += getSugars(3);
      }
      if (theForm.sugars4_cb.checked) {   // Sugars#4 checked
         vMask += 128;
         // Calculate the Sugars
         vSugar += getSugars(4);
      }
      // Do the Calculations here
      //if ( (vMask & 12) == 8) { 
      if ( bit_and(vMask,12) == 8) {  // do **Target Gravity**  (targVol checked, targGrav unchecked)
	      // (TargVol* (g/L of TargSG)) = (CurrVol * (g/L of CurrSG)) + Additional Sugars
         // sugars is vSugar in kilograms, so converted to grams for g/L
		  var mygpl = (vSugar*1000 + (SGToSugarConc(vCSg - getTempCoeff())*vCVol)) / vTVol;
		  theForm.targgrav_t.value = sugarConcToSG(mygpl) + getTempCoeff();
         // convert SG to selected units
         theForm.targgrav_t.value = doConvertSG(0,theForm.targgrav_s.selectedIndex,theForm.targgrav_s,theForm.targgrav_t);
         // update the Potential Alc value
		 i_updateAlc();
		 //theForm.sgOrigConv_t.value = theForm.targgrav_t.value;
         //i_updateVals(1);
      } else
      //if ( ((vMask & 12) == 4) && ((vMask & parseInt("0xF0",16)) > 0) ) { 
      if ( (bit_and(vMask,12) == 4) && (bit_and(vMask,parseInt("0xF0",16)) > 0) ) {  // do **Target Vol**   (targVol unchecked, targGrav checked and at least one Sugars checked)
	      // (TargVol* (g/L of TargSG)) = (CurrVol * (g/L of CurrSG)) + Additional Sugars
		  vTVol = (vSugar*1000 + (SGToSugarConc(vCSg) * vCVol)) / SGToSugarConc(vTSg);  // convert g/L to kg/L
		  theForm.vol_valt.value = Number(vTVol / Number(theForm.targvol_s.options[theForm.targvol_s.selectedIndex].value));
          theForm.targvol_t.value = displayNumber(theForm.vol_valt.value,2);  // Convert to current unit selection using values of the Units Combo values
      } else
      //if (((vMask & 12) == 12) && ((vMask & parseInt("0xF0",16)) != parseInt("0xF0",16))) { 
      if ((bit_and(vMask,12) == 12) && (bit_and(vMask,parseInt("0xF0",16)) != parseInt("0xF0",16))) {  // do **Honey quantity**  - targGrav & targVol checked but not all sugars checked
         // Grav = 1 + (targGrav-currGrav)
         var mySg = 1 + (vTSg-vCSg);
         // sugars is vSugar obtained previously via getSugars()
		  // XtraSugar = TargSugars - AdditionalSugar - CurrSugars
         var myQuant = (SGToSugarConc(vTSg)*vTVol)/1000 - (SGToSugarConc(vCSg)*vCVol)/1000 - vSugar;
         if (!theForm.sugars1_cb.checked) {   // Sugars#1 NOT checked
            theForm.sugars1_t2.value = Math.round(myQuant / (Number(theForm.sugars1_s2.options[theForm.sugars1_s2.selectedIndex].value) * Number(theForm.sugars1_t3.value)/100) * 1000)/1000;  // Convert to selected quantity unit Scaled by %Sugar
         } else
         if (!theForm.sugars2_cb.checked) {   // Sugars#2 NOT checked
            theForm.sugars2_t2.value = Math.round(myQuant / (Number(theForm.sugars2_s2.options[theForm.sugars2_s2.selectedIndex].value) * Number(theForm.sugars2_t3.value)/100) * 1000)/1000;  // Convert to selected quantity unit Scaled by %Sugar
         } else
         if (!theForm.sugars3_cb.checked) {   // Sugars#3 NOT checked
            theForm.sugars3_t2.value = Math.round(myQuant / (Number(theForm.sugars3_s2.options[theForm.sugars3_s2.selectedIndex].value) * Number(theForm.sugars3_t3.value)/100) * 1000)/1000;  // Convert to selected quantity unit Scaled by %Sugar
         } else
         if (!theForm.sugars4_cb.checked) {   // Sugars#4 NOT checked
            theForm.sugars4_t2.value = Math.round(myQuant / (Number(theForm.sugars4_s2.options[theForm.sugars4_s2.selectedIndex].value) * Number(theForm.sugars4_t3.value)/100) * 1000)/1000;  // Convert to selected quantity unit Scaled by %Sugar
         }
      } else
      //if ( ((vMask & parseInt("0xF0",16)) == parseInt("0xF0",16)) && ((vMask & 12) == 12) ) {  
      if ( (bit_and(vMask,parseInt("0xF0",16)) == parseInt("0xF0",16)) && (bit_and(vMask,12) == 12) ) {  // do **CurrGrav** - all four sugars checked and tragGrav and targVol (THIS IS RARE)
	      ; // shouldn't really be wanting to determine the CurrVol or CurrGrav
      }
      doBlend();
   }

   //
   // f i n d V a l ( )
   //
   // For a SELECT object, find the entry containing a string,
   //  and return the index of that selection (else -1)
   //
   function findVal(theOne, what) {
      var i = 0;

      for (i=0; i < theOne.options.length; i++) {
         if (theOne.options[i].text.indexOf(what) != -1) {
            return(i);
         }
      }
      return(-1);
   }

   //
   // i __ u p d a t e P r e f s ( ) 
   //
   // change selections based on preference click
   //
   function i_updatePrefs(theOne) {

      if (theForm.prefs[0] == theOne) {  // set to Metric
         theForm.currvol_s.selectedIndex = findVal(theForm.currvol_s,"Litre");
         theForm.targvol_s.selectedIndex = findVal(theForm.targvol_s,"Litre");
         theForm.sugars1_s2.selectedIndex = findVal(theForm.sugars1_s2,"Kilogram");
         //theForm.sugars1_s3.selectedIndex = findVal(theForm.sugars1_s3,"Kilogram");
         theForm.sugars2_s2.selectedIndex = findVal(theForm.sugars2_s2,"Kilogram");
         //theForm.sugars2_s3.selectedIndex = findVal(theForm.sugars2_s3,"Kilogram");
         theForm.sugars3_s2.selectedIndex = findVal(theForm.sugars3_s2,"Kilogram");
         //theForm.sugars3_s3.selectedIndex = findVal(theForm.sugars3_s3,"Kilogram");
         theForm.sugars4_s2.selectedIndex = findVal(theForm.sugars4_s2,"Kilogram");
         //theForm.sugars4_s3.selectedIndex = findVal(theForm.sugars4_s3,"Kilogram");
         theForm.mustt_s.selectedIndex = findVal(theForm.mustt_s,"Celsius");
         eval(theForm.mustt_s.options[theForm.mustt_s.selectedIndex].value);  // update value
         i_updateQuant(1);   // update first Sugars group
         i_updateVol(theForm.targvol_s,theForm.targvol_t,document.util.vol_settingt,document.util.vol_valt);
         i_updateVol(theForm.currvol_s,theForm.currvol_t,document.util.vol_settingc,document.util.vol_valc);
      }
      if (theForm.prefs[1] == theOne) {  // set to US
         theForm.currvol_s.selectedIndex = findVal(theForm.currvol_s,"US ");
         theForm.targvol_s.selectedIndex = findVal(theForm.targvol_s,"US ");
         theForm.sugars1_s2.selectedIndex = findVal(theForm.sugars1_s2,"Pound");
         //theForm.sugars1_s3.selectedIndex = findVal(theForm.sugars1_s3,"Pound");
         theForm.sugars2_s2.selectedIndex = findVal(theForm.sugars2_s2,"Pound");
         //theForm.sugars2_s3.selectedIndex = findVal(theForm.sugars2_s3,"Pound");
         theForm.sugars3_s2.selectedIndex = findVal(theForm.sugars3_s2,"Pound");
         //theForm.sugars3_s3.selectedIndex = findVal(theForm.sugars3_s3,"Pound");
         theForm.sugars4_s2.selectedIndex = findVal(theForm.sugars4_s2,"Pound");
         //theForm.sugars4_s3.selectedIndex = findVal(theForm.sugars4_s3,"Pound");
         theForm.mustt_s.selectedIndex = findVal(theForm.mustt_s,"Fahren");
         if (theForm.mustt.value < 40) {  // avoid unnecessary conversion
            eval(theForm.mustt_s.options[theForm.mustt_s.selectedIndex].value);  // update value
         }
         i_updateQuant(1);
         i_updateVol(theForm.targvol_s,theForm.targvol_t,document.util.vol_settingt,document.util.vol_valt);
         i_updateVol(theForm.currvol_s,theForm.currvol_t,document.util.vol_settingc,document.util.vol_valc);
      }
      if (theForm.prefs[2] == theOne) {  // set to Imperial
         theForm.currvol_s.selectedIndex = findVal(theForm.currvol_s,"Imp ");
         theForm.targvol_s.selectedIndex = findVal(theForm.targvol_s,"Imp ");
         theForm.sugars1_s2.selectedIndex = findVal(theForm.sugars1_s2,"Pound");
         //theForm.sugars1_s3.selectedIndex = findVal(theForm.sugars1_s3,"Pound");
         theForm.sugars2_s2.selectedIndex = findVal(theForm.sugars2_s2,"Pound");
         //theForm.sugars2_s3.selectedIndex = findVal(theForm.sugars2_s3,"Pound");
         theForm.sugars3_s2.selectedIndex = findVal(theForm.sugars3_s2,"Pound");
         //theForm.sugars3_s3.selectedIndex = findVal(theForm.sugars3_s3,"Pound");
         theForm.sugars4_s2.selectedIndex = findVal(theForm.sugars4_s2,"Pound");
         //theForm.sugars4_s3.selectedIndex = findVal(theForm.sugars4_s3,"Pound");
         theForm.mustt_s.selectedIndex = findVal(theForm.mustt_s,"Fahren");
         if (theForm.mustt.value < 40) {  // avoid unnecessary conversion
            eval(theForm.mustt_s.options[theForm.mustt_s.selectedIndex].value);  // update value
         }
         i_updateQuant(1);
         i_updateVol(theForm.targvol_s,theForm.targvol_t,document.util.vol_settingt,document.util.vol_valt);
         i_updateVol(theForm.currvol_s,theForm.currvol_t,document.util.vol_settingc,document.util.vol_valc);
      }
   }

   //
   // i __ u p d a t e A l c ( )
   //   Mead Batch Utility
   //
   //  update the Potential Alc (ABV/ABW) due to changed SG
   //
   function i_updateAlc() {
      var grav  = theForm.targgrav_s;
      var entry = theForm.targgrav_t;
      var abv   = theForm.targpa_s;
      var res   = theForm.targpa_t;
      var i     = getSelectedValue(grav);  // SG or BRIX ?? - want SG
      var k     = toSG(i,grav,entry);     // now have the SG  -- this calc the SG from the SG field, used to determine the PA from the SG

      // Calc the ABV or ABW
      if (abv.options[abv.selectedIndex].text.indexOf("ABV") > -1) {
         res.value = displayNumber(SGToABV(k),2);
      } else
      if (abv.options[abv.selectedIndex].text.indexOf("ABW") > -1) {
         // ABW = 0.8*ABV
         res.value = displayNumber(SGToABW(k),2); 
      }
   }

   //
   // t o S G ( )
   //
   function toSG(from, theOne, theVal) {
      var i = 0;

      // Convert the FROM as SG
      i = theVal.value;  // default is the value
      if (theOne.options[from].text.indexOf("BRIX") != -1) {
         i = BrixToSG(theVal.value);
      }
      if (theOne.options[from].text.indexOf("Baume") != -1) {
         i = BaumeToSG(theVal.value);
      }
      return(displayNumber(i,5));
   }

   //
   // d o C o n v e r t S G ( )
   //
   function doConvertSG(from, to, theOne, theVal) {
      var i = 0;
      var z = 0;

      // Convert the FROM to SG (using previous selection type)
      i = toSG(from, theOne, theVal);

      // Convert the SG to the format required by TO
      if (theOne.options[to].text.indexOf("BRIX") != -1) {
	      // SG -> Brix
         z = SGToBrix(i);
         return(displayNumber(z,2));
      }
      if (theOne.options[to].text.indexOf("Baume") != -1) {
	      // SG -> Baue
         z = SGToBaume(i);
         return(displayNumber(z,2));
      }
      return(displayNumber(i,3));
   }

   //
   // i __ u p d a t e S G ( )
   //   Mead Batch Util
   //
   //  Update the SG/BRIX/Baume display value based on the drop down 
   //    selection of Gravity Type
   //
   function i_updateSG(theOne, theVal) {
      var i = 0;
      var j = 0;

      i = getSelectedValue(theOne);  // New type  (to)
      j = Number(theForm.sg_setting.value);      // Old type  (from)
      // Convert from old to new  for BOTH select items
      theForm.currgrav_t.value = doConvertSG(j,i,theForm.currgrav_s,theForm.currgrav_t);
      theForm.targgrav_t.value = doConvertSG(j,i,theForm.targgrav_s,theForm.targgrav_t);
      // ensure selection pointer moves together for both Select items
      theForm.currgrav_s.selectedIndex = i;  
      theForm.targgrav_s.selectedIndex = i;  
      // remember which setting for next time
      theForm.sg_setting.value = i;
      //
	  // adjust the type for the Potential Alcohol utility
      theForm.sgOrigConv_s.selectedIndex = i;  
	  i_translateSG(document.util.sgOrigConv_setting);
   }

   //
   // i __ u p d a t e G r a v ( )
   //    Mead Batch Utility
   //
   //  Update the Target Gravity displayed text
   //
   function i_updateGrav() {
      var pa = theForm.targpa_s;
      var j = Number(theForm.targpa_t.value);  // ABV or ABW
      
      if (pa.options[pa.selectedIndex].text.indexOf("ABV") > -1) {
	      // abv is Baume, so converted by BaumeToSG which is ABVToSG
         theForm.targgrav_t.value = displayNumber(ABVToSG(j),3);
      } else
      if (abv.options[pa.selectedIndex].text.indexOf("ABW") > -1) {
         // ABW -> ABV (Baume) -> SG 
         theForm.targgrav_t.value = displayNumber(ABWToSG(j),3); 
      }
   }

   //
   // t o V o l ( )
   //  Mead batch Utility
   //
   function toVol(which, theOne, theVal) {
      // Convert to Metric Litres (Options value is the conversion factor)
      return(Number(theVal.value) * Number(theOne.options[Number(which)].value));
   }

   //
   // i __ u p d a t e V o l ( )
   //   Mead Batch Utility
   //
   // Update the volume display text (theVal.value)
   //
   //  theOne is the comboBox, theVal is the textBox, theSetting is previous selection for curr or targ volume combo box
   //
   function i_updateVol(theOne, theVal, theSetting, theSetVal) {
      var vTo = 0;
      var vFrom = 0;
      var vVol = 0;
      
	  // save the full significant figure value for calculations 
	  theSetVal.value = Number(theVal.value) * Number(theOne.options[Number(theSetting.value)].value)/Number(theOne.options[Number(theOne.selectedIndex)].value);
	  // display a reduced 
	  theVal.value = displayNumber(theSetVal.value,2);
	  theSetting.value = Number(theOne.selectedIndex);  // save the new current vol selection dropdown for conversion next time as the previous theSetting
   }

   //
   // i __ u p d a t e Q u a n t ( )
   //  Mead Batch Utility
   //
   //  Update the quantities for Sugars based on "which" group of 
   //   sugars is identified
   //
   function i_updateQuant(which) {
      var theOne = theForm.sugars1_s2;
      var theVal = theForm.sugars1_t2;
      var i = 0;
      var j = 0;
      var k = 0;

      if (which == 1) {  // first group of Sugars values
         theOne = theForm.sugars1_s2;
         theVal = theForm.sugars1_t2;

         i = getSelectedValue(theOne);  // New quant unit  (to)
         j = Number(theForm.quant_setting1.value);      // Old quant  (from)

         theOne = theForm.sugars1_s2;
         theVal = theForm.sugars1_t2;
         // Convert to Pounds (Options value is the conversion factor)
         k = toVol(j, theOne, theVal);  // Can use toVol()
         // Convert to new unit (Options value is the conversion factor)
         theVal.value = displayNumber(k / Number(theOne.options[i].value),4);
         theOne.selectedIndex = i;

         // save new setting for next time
         theForm.quant_setting1.value = i;
      } else
      if (which == 2) {  // second group of Sugars values
         theOne = theForm.sugars2_s2;
         theVal = theForm.sugars2_t2;

         i = getSelectedValue(theOne);  // New quant unit  (to)
         j = Number(theForm.quant_setting2.value);      // Old quant  (from)

         theOne = theForm.sugars2_s2;
         theVal = theForm.sugars2_t2;
         // Convert to Pounds (Options value is the conversion factor)
         k = toVol(j, theOne, theVal);  // Can use toVol()
         // Convert to new unit (Options value is the conversion factor)
         theVal.value = displayNumber(k / Number(theOne.options[i].value),4);
         theOne.selectedIndex = i;

         // save new setting for next time
         theForm.quant_setting2.value = i;
      } else
      if (which == 3) {  // third group of Sugars values
         theOne = theForm.sugars3_s2;
         theVal = theForm.sugars3_t2;

         i = getSelectedValue(theOne);  // New quant unit  (to)
         j = Number(theForm.quant_setting3.value);      // Old quant  (from)

         theOne = theForm.sugars3_s2;
         theVal = theForm.sugars3_t2;
         // Convert to Pounds (Options value is the conversion factor)
         k = toVol(j, theOne, theVal);  // Can use toVol()
         // Convert to new unit (Options value is the conversion factor)
         theVal.value = displayNumber(k / Number(theOne.options[i].value),4);
         theOne.selectedIndex = i;

         // save new setting for next time
         theForm.quant_setting3.value = i;
      } else
      if (which == 4) {  // fourth group of Sugars values
         theOne = theForm.sugars4_s2;
         theVal = theForm.sugars4_t2;

         i = getSelectedValue(theOne);  // New quant unit  (to)
         j = Number(theForm.quant_setting4.value);      // Old quant  (from)

         theOne = theForm.sugars4_s2;
         theVal = theForm.sugars4_t2;
         // Convert to Pounds (Options value is the conversion factor)
         k = toVol(j, theOne, theVal);  // Can use toVol()
         // Convert to new unit (Options value is the conversion factor)
         theVal.value = displayNumber(k / Number(theOne.options[i].value),4);
         theOne.selectedIndex = i;

         // save new setting for next time
         theForm.quant_setting4.value = i;
      } 
   }

   //
   //  i __ u p d a t e T y p e ( )
   //    Mead Batch Utility
   //
   //  Updated the Quantity settings based on the Quantity type (kilograms, pounds, ...)
   //  the parameter "which" identifies which of the four "Additional Sugars" needs to be changed
   //
   function i_updateType(which) {
      var theOne = theForm.sugars1_s1;
      var theVal = theForm.sugars1_t3;
      var theQVal = theForm.sugars1_t2;
      var i = 0;
      var j = 0;
      var k = 0;

      if (which == 1) { // Sugars#1
         theOne = theForm.sugars1_s1;  // Type selection
         theVal = theForm.sugars1_t3;  // the value to change (the Sugars Content)
         theQVal = theForm.sugars1_t2; // the quantity to change due to sugars content
      } else
      if (which == 2) { // Sugars#2
         theOne = theForm.sugars2_s1;
         theVal = theForm.sugars2_t3;
         theQVal = theForm.sugars2_t2;
      } else
      if (which == 3) { // Sugars#3
         theOne = theForm.sugars3_s1;
         theVal = theForm.sugars3_t3;
         theQVal = theForm.sugars3_t2;
      } else
      if (which == 4) { // Sugars#4
         theOne = theForm.sugars4_s1;
         theVal = theForm.sugars4_t3;
         theQVal = theForm.sugars4_t2;
      } 
      i = getSelectedValue(theOne);  // New Sug Content  (to)
      j = Number(theVal.value);      // Old Sug Content  (from)

      theVal.value=theOne.options[i].value;  // the new sugar content

      // scale the quantity back for the old sugar content, then adjust for new sugar content
      k = Number(theQVal.value) * j / (theOne.options[i].value);
      theQVal.value = displayNumber(k,3);
      theForm.type_setting.value = i;
   }

   //
   //  g e t T e m p C o e f f ( )
   //
   function getTempCoeff() {
      var y = Number(theForm.mustt.value);
      var z = 0;

      if (theForm.mustt_s.selectedIndex == 1) {
	     y = 5*(y-32)/9;  // convert to Celsius
      }
      z = -0.00469615 + 0.000377273*y - 1.17144E-05*Math.pow(y,2) + 2.29558E-07*Math.pow(y,3);
      return(Number(displayNumber(z,4)));
   }
// Temp correction for 20C
// -0.00469615 + 0.000377273*T - 1.17144E-05*T^2 + 2.29558E-07*T^3
// Temp Correction for 15C (59F)
// 1.313454 - 0.132674*T + 2.057793e-3*T**2 - 2.627634e-6*T**3
// modified to 1.2042494....    to zero at 59F

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////  B l e n d   U t i l i t y ////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////


   //
   // d o B l e n d ( )
   //
   // Based on which field is blank and which Radio button is selected, calc the blend
   //
   //   A       C
   //       M
   //   B       D
   //         -----
   //           C+D  (called vCD below)
   //
   function doBlend() {
      var vA  = Number(theForm.blend_val1.value);
      var vB  = Number(theForm.blend_val2.value);
      var vC  = Number(theForm.blend_vol1.value);
      var vD  = Number(theForm.blend_vol2.value);
      var vM  = Number(theForm.blend_res.value);
      var vCD = Number(theForm.blend_totvol.value);

      // ensure blen value is BETWEEN value#1 and value#2      
      //vM = Math.min(vM,vB);
      //vM = Math.max(vM,vA);
      //if ( vM != Number(theForm.blend_res.value) ) {
  	  //   theForm.blend_res.value = displayNumber(vM,3);
	  //}

      // Calc the missing values based on what data and selections have been made
      if (theForm.blend_r[0].checked) { // Val1 checked - calc Val1  (vA)
	     if ( (vB != "") && (vC != "") && (vD != "") && (vM != "")) {
	        vA = Number(displayNrTrim((vM*vC+vM*vD-vB*vD)/vC,3));
            theForm.blend_val1.value = vA;
			 theForm.blend_r[0].checked = false;
		     changeMsg("");
		 } else {
		     changeMsg("More values rquired!");
		 }
	  } else
      if (theForm.blend_r[1].checked) { // Vol1 checked - calc vol1  (vC)
	     if ( (vA != "") && (vB != "") && (vD != "") && (vM != "")) {
	        vC = Number(displayNrTrim(vD*(1-(vB/vM))/((vA/vM)-1),3));
            theForm.blend_vol1.value = vC;
 			 theForm.blend_r[1].checked = false;
		     changeMsg("");
		 } else
	     if ( (vA != "") && (vB != "") && (vCD != "") && (vM != "")) {
	        vC = Number(displayNrTrim(vCD*(vB-vM)/(vB-vA),3));
            theForm.blend_vol1.value = vC;
  		     vD = Number(displayNrTrim(vCD*(vM-vA)/(vB-vA),3));
            theForm.blend_vol2.value = vD;
 			 theForm.blend_r[1].checked = false;
		     changeMsg("");
		 } else {
			   changeMsg("Missing a volume");
		 }
	  } else
      if (theForm.blend_r[2].checked) { // BlendedValue checked - calc blend  (vM)
	     if ( (vA != "") && (vB != "") && (vC != "") && (vD != "")) {
	        vM = Number(displayNrTrim((vA*vC+vB*vD)/(vC+vD),3));
            theForm.blend_res.value = vM;
 			 theForm.blend_r[2].checked = false;
		     changeMsg("");
		 } else {
		     changeMsg("More values rquired!");
		 }
	  } else
      if (theForm.blend_r[3].checked) { // Val2 checked - calc Val2  (vB)
	     if ( (vA != "") && (vC != "") && (vD != "") && (vM != "")) {
	        vB = Number(displayNrTrim((vM*vC+vM*vD-vA*vC)/vD,3));
            theForm.blend_val2.value = vB;
 			 theForm.blend_r[3].checked = false;
		     changeMsg("");
		 } else {
		     changeMsg("More values rquired!");
		 }
	  } else
      if (theForm.blend_r[4].checked) { // Vol2 checked - calc vol2  (vD)
	     if ( (vA != "") && (vB != "") && (vC != "") && (vM != "")) {
	        vD = Number(displayNrTrim(vC*((vA/vM)-1)/(1-(vB/vM)),3));
            theForm.blend_vol2.value = vD;
 			 theForm.blend_r[4].checked = false;
		     changeMsg("");
		 } else
	     if ( (vA != "") && (vB != "") && (vCD != "") && (vM != "")) {
	        vC = Number(displayNrTrim(vCD*(vB-vM)/(vB-vA),3));
            theForm.blend_vol1.value = vC;
  		     vD = Number(displayNrTrim(vCD*(vM-vA)/(vB-vA),3));
            theForm.blend_vol2.value = vD;
 			 theForm.blend_r[4].checked = false;
		     changeMsg("");
		 } else {
			   changeMsg("Missing a volume");
		 }
	  } else
      if (theForm.blend_r[5].checked) { // totvol checked - Calc vol1, vol2 and totvol
	     if ( (vA != "") && (vB != "") && (vM != "")) {
  	        if ( (vC != "") && (vD == "") ) {  // given vC, calc vD & vCD
		       vD = Number(displayNrTrim(vC*((vA/vM)-1)/(1-(vB/vM)),3));  // same as above
			   theForm.blend_vol2.value = vD;
			   vCD = Number(displayNrTrim(0+vC+vD,3));
              theForm.blend_totvol.value = vCD;
   			   theForm.blend_r[5].checked = false;
			   changeMsg('');
		    } else
	        if ( (vC == "") && (vD != "") ) {  // given vD, calc vC & vCD
			   vC = Number(displayNrTrim(vD*(1-vB/vM)/(vA/vM-1),3));  // same as above
			   theForm.blend_vol1.value = vC+0;
			   vCD = Number(displayNrTrim(0.0+vC+vD,3));
              theForm.blend_totvol.value = vCD+0;
   			   theForm.blend_r[5].checked = false;
			   changeMsg('');
		    } else
	        if ( (vC == "") && (vD == "") && (vCD != "") ) {  // given totvol and no vol1 or vol2, calc vC & vD
			   vC = Number(displayNrTrim(vCD*(vB-vM)/(vB-vA),3));
              theForm.blend_vol1.value = vC;
			   vD = Number(displayNrTrim(vCD*(vM-vA)/(vB-vA),3));
              theForm.blend_vol2.value = vD;
   			   theForm.blend_r[5].checked = false;
			   changeMsg('');
			} else {
			   changeMsg("Missing a volume");
			}
		 }
	  }
	  if ((vCD != (vC+vD)) && (vC > 0) && (vD > 0) ) {
	     vCD = Number(displayNrTrim(vC+vD,3));
         theForm.blend_totvol.value = vCD;
		  theForm.blend_r[5].checked = false;
	      changeMsg('');
	  }
      return(1);
   }

  //
  // i __ c h a n g e L a b e l  ( )
  //
  // Update the labels on the Blending Calc Utility
  //
  function i_changeLabel(which) {
     var x1 = document.getElementById('b1');
     var x2 = document.getElementById('b2');
     var x3 = document.getElementById('bres');

     switch(which) {
       case 1:
         x1.innerHTML = "SG #1";
         x2.innerHTML = "SG #2";
         x3.innerHTML = "Blended SG";
         break;
       case 2:
         x1.innerHTML = "BRIX #1";
         x2.innerHTML = "BRIX #2";
         x3.innerHTML = "Blended BRIX";
         break;
       case 3:
         x1.innerHTML = "Baume #1";
         x2.innerHTML = "Baume #2";
         x3.innerHTML = "Blended Baume";
         break;
       case 4:
         x1.innerHTML = "%ABV #1";
         x2.innerHTML = "%ABV #2";
         x3.innerHTML = "Blended %ABV";
         break;
       case 5:
         x1.innerHTML = "%ABW #1";
         x2.innerHTML = "%ABW #2";
         x3.innerHTML = "Blended %ABW";
         break;
       default:
         x1.innerHTML = "Value #1";
         x2.innerHTML = "Value #2";
         x3.innerHTML = "Blended Value";
     }
     return (0);
  }

  //
  // c h a n g e M s g  ( )
  //
  // Update the error message on the Blending Calc Utility
  //
  function changeMsg(msg) {
     var x1 = document.getElementById('blend_msg');
	 var y = "&nbsp;";  // default to a non-breaking space, so something displayed  
	 if (msg != "") { y = msg; }
	 x1.innerHTML = y;
	 return(0);
  }
  
  //
  // i __ b l e n d C l e a r ( )
  //
  function i_blendClear() {
     theForm.blend_val1.value = '';
     theForm.blend_val2.value = '';
     theForm.blend_res.value = '';
     theForm.blend_vol1.value = '';
     theForm.blend_vol2.value = '';
     theForm.blend_totvol.value = '';
  }

</script>

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