function ValidateNumeric() 
  { 
    var keyCode = window.event.keyCode; 
    if (keyCode > 57 || keyCode < 48) 
      window.event.returnValue = false; 
  }
  
  function bookmark()
  {
  bookmarkurl="http://www.woodslamp.com.au";
  bookmarktitle="Woods Lamp - BUY ONLINE";
  if (document.all)
  window.external.AddFavorite(bookmarkurl, bookmarktitle)
  else if (window.sidebar) // firefox
  window.sidebar.addPanel(bookmarktitle, bookmarkurl, "");
  }