x = screen.width; y = screen.height;

    if (x >= 1280) {document.write('<link rel="stylesheet" href="/include/portal1280.css" type="text/css">');}
    else if (x >= 1024) {document.write('<link rel="stylesheet" href="/include/portal1024.css" type="text/css">');}
    else if (x >= 800) {document.write('<link rel="stylesheet" href="/include/portal800.css" type="text/css">');}
    else {document.write('<link rel="stylesheet" href="/include/portal640.css" type="text/css">');}