javascript calulator code help

[jdgrinder]

For some reason I can get this to work on my other calculators forms but sometimes it doesn't work. here is the code for the one that doesn't work.

here is the script:

<script language="JavaScript">
<!--
//Script by Tom Richardson Jr.
//Permission to use this scipt is permited as long as this
//part stays intact. 
//If you have any questions, e-mail me at gooftroop@geocities.com
//or visit my website at http://home.rmci.net/gooftroop
//This is just a basic calculator that will do the exponential math.
//Or, in basic terms, will calculate powers of any given number.
//Just another user-friendly calculator that uses terms and text
//fields. 
//Have fun!!
function calc() {
		Pi = 3.1415926535;
        a = document.form1.a.value;
        b = document.form1.b.value;
		c = document.form1.b2.value
        d = Pi * (a*a)/4;
		e = (b)/231;
		f = (d * e);
        document.form1.total.value = f;
		        		
        a2 = document.form1.a.value;
        b2 = document.form1.b2.value;
        c2 = Pi * (a2*a2)/4;
		d2 = Pi * (b2*b2)/4;
		e2 = (c2 - d2);
        document.form1.total2.value = e2;
		f2 = document.form1.total2.value;		
        g2 = document.form1.b.value;
        h2 = (f2 * g2)/231;		
        document.form1.total222.value = h2		
        }
//-->
</script>

here is the form code

                          <form name="form1">
    <center>
          <table border=2 cellspacing=1 cellpadding=1 width="311" height="343" bordercolorlight="#FF6633" bordercolordark="#CC3333">

            <tr bgcolor="#FFCC99"> 
              <td colspan=3 align=center height="40"><font face="Times New Roman, Times, serif" size="3" ><b><h4>Hydraulic 
                Pump and Motor Displacement in Cubic Inches per Minute</h4></b></font></td>
        <tr> 
          <td height="255" width="94"> 
            <div align="center"><font size="2"><b>Enter GPM<br>
              <input type="text" name="a" size=15 maxlength="15">
              <br>
              </b></font><br>
              <b><font size="2">Enter RPM<br>

              </font></b> 
              <input type="text" name="b" size=15 maxlength="15">
            </div>
          </td>
          <td height="255" width="76"> 
            <div align="center"><br>
              <br>
              <input type="button" value="Calculate" onClick="calc()" name="Calculate"><br><br>
               <input type="reset" value="Reset" name="reset">
            </div>
          </td>

          <td height="255" width="118"> 
            <div align="center"><font size="2"><b>Displacement in<br>
              CIR</b></font><br>
              <input type="text" name="total" size=15 maxlength="15">
            </div>
          </td>
            <tr bgcolor="#FFCC99"> 
              <td colspan=3 align=center height="6"> 
               

          </td>
      </table>
    </center>
  </form>

I don't understand why it will work for other form calculators I have ? It is the same code on the other ones like the one above?

Thanks

[jdgrinder]

figure it out took me forever but was using the wrong script