function deleteAllCookies() {
	var allCookies = getAllCookies_Array();
	var expireDate = new Date ();
	expireDate.setYear(expireDate.getFullYear() - 10);
	
	if (allCookies.length != 0) {
		for (var name in allCookies) {
			document.cookie = escape(name) + "=" + escape("Pending Delete") + "; expires=" + expireDate.toGMTString() + "; path=/";
		}
	}
}

function getAllCookies_Array() {
	var allCookies = new Array;
	if ( document.cookie && document.cookie!= "") {
		var cookiesArrayed = document.cookie.split(";");
		for (var i in cookiesArrayed) {
			var nameValuePair = cookiesArrayed[i].split("=");
			allCookies[decodeURIComponent(nameValuePair[0])] = decodeURIComponent(nameValuePair[1]);
		}
	}
	return allCookies;
}

function doLogout() {
	deleteAllCookies();
}