function GetXmlHttpObject()
	{
		if (window.XMLHttpRequest)
		  {
			  // code for IE7+, Firefox, Chrome, Opera, Safari
			  return new XMLHttpRequest();
		  }
		if (window.ActiveXObject)
		  {
			  // code for IE6, IE5
			  return new ActiveXObject("Microsoft.XMLHTTP");
		  }
		return null;
	}