function doPopups() 
{
    if (!document.getElementsByTagName)return false;
    var links = document.getElementsByTagName("a");
    for (var i = 0; i < links.length; i++) {
        if (links[i].className.match("popup")) {
            links[i].onclick = function () {
                window.open(this.href);
                return false;
            }
        }
    }
}