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;
      }
    }
    if (links[i].className.match("popup2")) {
      links[i].onclick = function() {
        window.open(this.href, 'thewin', 'width=390,height=470,toolbar=no,scrollbars=no');
        return false;
      }
    }
    if (links[i].className.match("popup3")) {
      links[i].onclick = function() {
        window.open(this.href, 'thewin', 'width=390,height=470,toolbar=no,scrollbars=yes');
        return false;
      }
    }
  }
}




function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

addLoadEvent(doPopups);