function logout(){


//alert(stat)

checkbrowser()

var url="includes/logout.php";
		/*url=url+"?q="+itemcode+"&s="+stat;		
		url=url+"&sid="+Math.random();*/
		xmlHttp.open("GET",url,false);
		xmlHttp.send(null);



//alert(xmlHttp.responseText);

//document.write(xmlHttp.responseText);
	
	
}