document.write('<link rel="stylesheet" href="'); 
var agt=navigator.userAgent.toLowerCase(); 
if (agt.indexOf('opera') != -1) document.write('/opera.css'); 
else if (agt.indexOf('gecko') != -1) document.write('/templates/css/moz_style.css'); 
else if (agt.indexOf('msie') != -1) document.write('/templates/css/ie_style.css'); 
else document.write('/templates/css/style.css'); 
document.write('" type="text/css">');