//Cross-browser XHR object generator
function getXHRObject(){
   var XHRObject;
   if(window.XMLHttpRequest)
   {
      XHRObject = new XMLHttpRequest();
   }
   else
   {
      try
      {
         XHRObject = new ActiveXObject("Msxml2.XMLHTTP");
      }
      catch (e)
      {
         try
         {
            XHRObject = new ActiveXObject("Microsoft.XMLHTTP");
         }
         catch (e)
         {
            XHRObject = false;
         }
      }
   }
   return XHRObject;
}