// JavaScript Document
function GetXmlHttpObject()
{
  var xmlHttp;
  try
  {    // Firefox, Opera 8.0+, Safari    
		xmlHttp=new XMLHttpRequest();
	}
  catch (e)
  {    // Internet Explorer
  	try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
    catch (e)
    {
			try
      {
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}
      catch (e)
      {
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	return xmlHttp;
}