writeCookie();

function writeCookie() {
 var today = new Date();
 var the_date = new Date("December 31, 2023");
 var the_cookie_date = the_date.toGMTString();
 var the_cookie = "users_resolution="+ screen.width +"x"+ screen.height;
 var the_cookie = the_cookie + ";expires=" + the_cookie_date;
 document.cookie=the_cookie

 document.write("<!-- " + location.href + " -->");
 location = location.href;
}