This script will allow you to insert a power level and convert it to selected option.

Insert this code into your HEAD of HTML

<!-- // == This Script Free To Use Providing This Notice Remains == // // == This Script Has Been In The http://www.DesignerWiz.com Javascript Public Archive Library == // // == NOTICE: Though This Material May Have Been In A Public Depository, Certain Author Copyright Restrictions May Apply == // --><SCRIPT language="JavaScript"> <!-- Original: Cut-N-Paste Javasript <!-- Begin function initArray() { this.length = initArray.arguments.length; for (var i = 0; i < this.length; i++) { this[i] = initArray.arguments[i]; } } /* Please don't ask about this work-around. It works... We're sure arrays will be better supported soon. */ var isn11 = new initArray("4b","5b","8b","8b"); isn11[0] = "~01~10.7457~21.014~30.7604~476.04~5550~60.1781~70.7068~8"; isn11[1] = "~01.3410~11~21.360~31.020~4102.0~5737.6~60.2388~70.9478~8"; isn11[2] = "~00.9863~10.7355~21~30.75~475~5542.5~60.1757~70.6971~8"; isn11[3] = "~01.315~10.9807~21.333~31~4100~5723.3~60.2342~70.9295~8"; isn11[4] = "~00.01315~10.009807~20.01333~30.01~41~57.233~60.002342~70.009295~8"; isn11[5] = "~00.00181818~10.001356~20.00184~30.00138~40.1383~51~60.0003238~70.001285~8"; isn11[6] = "~05.615~14.187~25.692~34.269~4426.9~53088~61~73.968~8"; isn11[7] = "~01.415~11.055~21.434~31.076~4107.6~5778.2~60.2520~71~8"; function powerCon() { for (var i = 0; i < 8; i++) { if (document.isnform11.poweri[i].checked) { powi = i; powinm = document.isnform11.poweri[i].value; } } for (var i = 0; i < 8; i++) { if (document.isnform11.powero[i].checked) { powo = i; powonm = document.isnform11.powero[i].value; } } useri = document.isnform11.powerin.value; mulstr = isn11[powi]; picker = "~" + powo; ps = mulstr.indexOf(picker); powo++; picker = "~" + powo; ps1 = mulstr.indexOf(picker); mulstr = mulstr.substring((ps + 2),ps1); ps = (useri * mulstr); picker = ""; picker += ps ps1 = picker.indexOf("."); if (ps1 > -1) { ps = ps + .000001; picker = ""; picker += ps; ps2 = picker.indexOf("e"); if (ps2 < 0) { picker = picker.substring(0,(ps1 + 6)); } if (ps2 == 0 || ps2 > 0) { ps3 = picker.indexOf("00000"); if (ps3 > 0) { picker = picker.substring(0,ps3 + 1) + picker.substring(ps2,picker.length); } } } picker = useri + " " + powinm + " = " + picker + " " + powonm document.isnform11.powerout.value = picker; } // End --> </script>

Insert this code into your BODY section

<CENTER> <FORM NAME="isnform11"> <TABLE BORDER=1 WIDTH=486> <tr> <TD COLSPAN=9 ALIGN=CENTER><FONT COLOR="blue"><B>Power Equivalents</B></FONT></td></tr> <tr> <TD COLSPAN=9 VALIGN=TOP><FONT SIZE=1><B>Type the number you wish converted here: </B><input type="text" NAME="powerin" SIZE=30 value="" onChange="powerCon();"><BR><B>Then click radio buttons for desired conversion:</FONT></td></tr> <tr> <TD ALIGN=CENTER><FONT COLOR="red" SIZE=1><B>From:</B></FONT></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Hp<BR><input type="radio" NAME="poweri" value="Hp" CHECKED onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Metric hp<BR><input type="radio" NAME="poweri" value="Metric hp" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Kw<BR><input type="radio" NAME="poweri" value="Kw" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Poncelets<BR><input type="radio" NAME="poweri" value="Poncelets" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Kg-m/sec<BR><input type="radio" NAME="poweri" value="Kg-m/sec" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Ft-lb/sec<BR><input type="radio" NAME="poweri" value="Ft-lb/sec" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Kcal/sec<BR><input type="radio" NAME="poweri" value="Kcal/sec" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Btu/sec<BR><input type="radio" NAME="poweri" value="Btu/sec" onClick = ""></td></tr> <tr> <TD ALIGN=CENTER><FONT COLOR="red" SIZE=1><B>To:</B></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Hp<BR><input type="radio" NAME="powero" value="Hp" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Metric Hp<BR><input type="radio" NAME="powero" value="Metric Hp" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Kw<BR><input type="radio" NAME="powero" value="Kw" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Poncelets<BR><input type="radio" NAME="powero" value="Poncelets" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Kg-m/sec<BR><input type="radio" NAME="powero" value="Kg-m/sec" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Ft-lb/sec<BR><input type="radio" NAME="powero" value="Ft-lb/sec" CHECKED onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Kcal/sec<BR><input type="radio" NAME="powero" value="Kcal/sec" onClick = ""></td> <TD ALIGN=CENTER VALIGN=TOP><FONT SIZE=1>Btu/sec<BR><input type="radio" NAME="powero" value="Btu/sec" onClick = ""></td></tr> <tr> <TD COLSPAN=9 VALIGN=TOP><FONT SIZE=1><input type="button" value=" Click for Conversion " onClick="powerCon();"><input type="reset" value=" Reset Values "><input type="text" NAME="powerout" SIZE=30 value="" onClick="powerCon();"></FONT></td></tr></TABLE></FORM></CENTER>

Simply Cut and Paste code snippet
Be sure to properly place script position in HEAD & BODY sections of html

This script has been in the JS Made Easy.com Public Library.