function logoutUser() {
    deleteCookie("SOUserLogin");
    deleteCookie("SOUserPassword");
    window.location.href = unescape(window.location.pathname);
}

function deleteCookie(name) {
    createCookie(name,"",-1);
}

function createCookie(name,value,days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}