function checkValues() {


if (window.document.RATEFORM.pzip.value == "") { 
   window.alert("* Error - Invalid pickup information! Please correct and resubmit your request.");
   window.document.RATEFORM.pzip.focus();
   return false;
   }

if (window.document.RATEFORM.dzip.value == "") { 
   window.alert("* Error - Invalid destination information! Please correct and resubmit your request.");
   window.document.RATEFORM.dzip.focus();
   return false;
   }
if (window.document.RATEFORM.wgt1.value == "" || window.document.RATEFORM.CLS1.selectedIndex == "  ") { 
   window.alert("* Error - You must enter at least one weight and class! Please correct and resubmit your request.");
   window.document.RATEFORM.wgt1.focus();
   return false;
   }

   return true;
}