function popup(u, n, wwidth, wheight, wresize, wscroll)
{
  settings = 'width='+wwidth+',height='+wheight+',resizable='+wresize+',scrollbars='+wscroll;
  url = 'popup.php?page='+u+'&w='+wwidth+'&h='+wheight;
  window.open(url, n, settings);
}

blinkVisible = false;
function blinkIt() {
  obj = document.getElementById("blink");
  blinkVisible = !blinkVisible;
  if (obj) {
    if (blinkVisible) {
      obj.style.visibility = "visible";
    }
    else {
      obj.style.visibility = "hidden";
    }
  }
}