// IE FIREFOX HACK Document
    document.write('<link rel="stylesheet" href="http://www.yourdomain.com/');
    var agt=navigator.userAgent.toLowerCase();
    if (agt.indexOf('opera') != -1) document.write('opera.css');
    else if (agt.indexOf('gecko') != -1) document.write('mozilla.css');
    else if (agt.indexOf('msie') != -1) document.write('iexplorer.css');
    else document.write('default.css');
    document.write('" type="text/css">');