function popup() {
  obj = getElementsByClassName('popup');
  for (var i in obj) {
    obj[i].onclick = function () { open_popup(this.href,487,410,'popup_487_410'); return false; }
  }
}
onload_items[onload_items.length] = popup;

function closer() {
  obj = getElementsByClassName('closer');
  for (var i in obj) {
    obj[i].onclick = function () { window.close(); return false; }
  }
}
onload_items[onload_items.length] = closer;

function window_closed(w){
  var ua = navigator.userAgent;
  if (!!w) {
    if (ua.indexOf('MSIE 4') != -1 && ua.indexOf('Win')!=-1) return w.closed;
    else return typeof w.document != 'object';
  } else return true;
}

function open_popup(url,wid,hgt,name) {
  opt = 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no';
  if (window.open) {
    if (window_closed(name)) {
      var w = window.open(url,name,"width="+wid+",height="+hgt+","+opt);
    }
    else name.location.href = url;
    w.focus();
  }
  else location.href = url;
}