function beginat()
   {
   document.forms[0].txtQuantity.focus()
   return
   }
function checkform1(varquantity)   {
   if (varquantity == "") {
      alert("The Quantity field cannot be blank.");
      document.forms[0].txtQuantity.focus();
      return false;
   }
   var ValidChars = "0123456789";
   var IsNumber=true;
   var Char;
   for (i = 0; i < varquantity.length && IsNumber == true; i++)  { 
      Char = varquantity.charAt(i); 
      if (ValidChars.indexOf(Char) == -1)   {
         IsNumber = false;
         alert("The Quantity field must be numeric.");
         document.forms[0].txtQuantity.focus();
         }
   return IsNumber;
   }


return true   
}