var xmlHttp



function GetXmlHttpObject()

{

	var xmlHttp=null;

	try

	{

		// Firefox, Opera 8.0+, Safari

		xmlHttp=new XMLHttpRequest();

	}

	catch (e)

	{

	  // Internet Explorer

		try

		{

			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");

		}

		catch (e)

		{

			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");

		}

	}

	return xmlHttp;

}



function request(url)

{

	xmlHttp=GetXmlHttpObject();

	if (xmlHttp==null)

	{

		alert ("Your browser does not support AJAX!");

		return;

	} 

	xmlHttp.open("GET",url,true);

	xmlHttp.send(null);

}