var xmlHttp_keep;

function ajax_keepsession() {
	xmlHttp_keep = GetXmlHttpObject_keepsession();
	if (xmlHttp_keep == null) {
		alert("Your browser does not support AJAX!");
		return;
	}
	var url = "/ajax/keepsession.jsp?id="+Math.random();
	url = encodeURI(encodeURI(url));
	xmlHttp_keep.open("GET", url, true);
	xmlHttp_keep.onreadystatechange = getmessage_keepsession;
	xmlHttp_keep.send(null);
}


function getmessage_keepsession() {
	var rsCt;
	if(xmlHttp_keep.readyState == 4){
		if(xmlHttp_keep.status == 200){
			rsCt = xmlHttp_keep.responseText;
		}	
	}
}

function GetXmlHttpObject_keepsession() {
	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;
}

	var intervalid_keepsession = 0;
	
	intervalid_keepsession = setInterval("ajax_keepsession()",1000*60*5);