var up_url = "http://research.mschat.net/images/arrow_up.png";
var down_url = "http://research.mschat.net/images/arrow_down.png";
document.write('<img src="' + down_url + '" alt=""/> Windows 90.97% (<span style="color: red;">-0.033</span>) <img src="' + up_url + '" alt=""/> Mac 5.17% (<span style="color: green;">+0.048</span>) <img src="' + up_url + '" alt=""/> Linux 3.44% (<span style="color: green;">+0.046</span>) ');