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Drop down menu calculator

Select the options and click to add...

Here is the code:

<%option explicit%>
<% Dim isSubmitted,v1,v2,v3,vtotal%>
<% IF request.form("isSubmitted")="yes" then
v1=request.form("v1")
v2=request.form("v2")
v3=request.form("v3")
If v1="" then 
vl="0"
else
v1=formatcurrency(v1,2)*1
end if
If v2="" then 
v2="0"
else
v2=formatcurrency(v2,2)*1
end if
If v3="" then 
v3="0"
else
v3=formatcurrency(v3,2)*1
end if
vTotal=v1+v2+v3
end if
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>ddCalculator</TITLE>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
</HEAD>
<BODY>
<form action="ddcalculator.asp" method="post" name="calcForm" id="calcForm" >
<select name="v1">
<option value="0" selected>-- select one --</option>
<option value="10.00">variable one - $10.00</option>
<option value="15.50">variable one - $15.50</option> 
</select>
<script>
for (i = 0; i < document.forms[0].v1.options.length; i++)
{
if (document.forms[0].v1.options[i].value == "<%=request.form("v1")%>")
{
document.forms[0].v1.selectedIndex = i;
break;
}
}
</script>
<br>
<br>
<select name="v2">
<option value="0" selected>-- select one --</option>
<option value="20.00">variable two - $20.00</option>
<option value="12.95">variable two - $12.95</option>
</select>
<script>
for (i = 0; i < document.forms[0].v2.options.length; i++)
{
if (document.forms[0].v2.options[i].value == "<%=request.form("v2")%>")
{
document.forms[0].v2.selectedIndex = i;
break;
}
}
</script>
<br>
<br>
<select name="v3">
<option value="0" selected>-- select one --</option>
<option value="30.00">variable three - $30.00</option>
<option value="5.75">variable three - $5.75</option>
</select>
<script>
for (i = 0; i < document.forms[0].v3.options.length; i++)
{
if (document.forms[0].v3.options[i].value == "<%=request.form("v3")%>")
{
document.forms[0].v3.selectedIndex = i;
break;
}
}
</script>
<br>
<br>
<input name="submit" type="submit" value="Click Here to Calculate Order">
<input type="hidden" name="isSubmitted" value="yes">
<br>
Total:
<br>
<input type="text" name="vtotal" value="<%=formatcurrency(vtotal,2)%>">
</form>
</BODY>
</HTML>