function getXMLHTTPRequest(){
	var req= false;
	try
	{
		req=new XMLHttpRequest();
	}
	catch (err1)
	{
		try
		{
			req = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (err2)
		{
			try
			{
				req = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (err3)
			{
				req = false;
			}
		}

	}
	return req;
}