function despace(testVal)
{ return testVal.replace(/ +/g,''); }

function doVal(thisform)
{
    var re = new RegExp;
    re.compile("[.\r\n]*?[A-Za-z]+://[A-Za-z0-9-_]+\\.[A-Za-z0-9-_%&\?\/.=]+[.\r\n]*?");

     if ( re.test(thisform.Product1.value) || re.test(thisform.Product2.value) || re.test(thisform.Product3.value) || re.test(thisform.Comments.value) )
    { alert("You cannot enter URLs in the products and comments."); return false; }

    if (!despace(thisform.name.value)) { alert("You must enter a name."); return false; }
    if (!despace(thisform.phone.value) && !despace(thisform.email.value) ) { alert("Please enter a phone number or an e-mail address."); return false; }
    if (!despace(thisform.zip.value)) { alert("You must enter a zip code."); return false; }
    if (radioIndex(thisform.contacttype) < 0) { alert("Please choose a contact method."); return false; }
    if (radioIndex(thisform.timeframe) < 0) { alert("Please choose a purchase timeframe."); return false; }
    if (!despace(thisform.ModelNbr1.value) && !despace(thisform.ModelNbr2.value) && !despace(thisform.ModelNbr3.value)) { alert("Please enter at least one product model."); return false; }
    if (radioIndex(thisform.ExtendedWarr) < 0) { alert("Please choose an extended warranty option."); return false; }
}

function radioIndex(rb)
{ checkedIndex = -1;
 for (i=0;i<rb.length;i++)
 { if (rb[i].checked) { checkedIndex = i; } }
 return checkedIndex;
}