function F_KeepAlive() { 
	var objHttpRequest;

	if (window.XMLHttpRequest) { // Not IE
		try {
			objHttpRequest=new XMLHttpRequest();
			if (objHttpRequest.overrideMimeType) objHttpRequest.overrideMimeType("text/xml");
		} catch (e) {
			objHttpRequest=false;
		}
	} else if (window.ActiveXObject) { // IE
		try {
			objHttpRequest=new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				objHttpRequest=new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
				objHttpRequest=false;
			}
		}
	}

	if (!objHttpRequest) {
		alert("Your user session is going to time out in 2 minutes.\nPlease finish your post or open a new window onto our website to keep logged in so that you do not lose your post.");
		return false;
	}

	objHttpRequest.onreadystatechange=function() {
		if (objHttpRequest.readyState==4) {
			/*if (objHttpRequest.status==200) {
				eval(F+" (objHttpRequest.responseText)");
			} else {
				alert("Request error: "+objHttpRequest.status);
			}*/
		}
	}
	objHttpRequest.open("GET", "0.txt", true);
	objHttpRequest.send(null);
	setTimeout("F_KeepAlive()", 780000); // 13 minutes
}