function InitAjax()
{
	var ajax = false;
	try {ajax = new ActiveXObject("Msxml2.XMLHTTP");}
	catch (e)
	{
		try {ajax = new ActiveXObject("Microsoft.XMLHTTP");}
		catch (e){ajax = false;}
	}
	if(!ajax && typeof XMLHttpRequest!='undefined') {ajax = new XMLHttpRequest();}
	return ajax;
}
var ajax = InitAjax();