// JavaScript Document
 
function calculateUPSShipping(){


  var url = "AJAX_BE/item_ShippingCalc.php?ShipZip=" + document.getElementById('ShipZip').value;
  url += "&ProdWeight=" + document.getElementById('ProdWeight').value;
  url += "&ProdZip=" + document.getElementById('ProdZip').value;
  url += "&ShipClass=" + document.getElementById('ShipClass').value;
  document.getElementById('shippingCalc').innerHTML = "<img src='../AJAX_BE/images/loading.gif'/>";
 
  http.open("GET", url, true);
  http.onreadystatechange = handleHttpResponseShip;
 
  http.send(null);
}
 
function handleHttpResponseShip(){
  if(http.readyState == 4){
    document.getElementById('shippingCalc').innerHTML = http.responseText;
  }
}