function showimage()
   {
      if (!document.images)
         return
      document.images.avatar.src= 'images/avatar/' + document.Register.user_avatar.options[document.Register.user_avatar.selectedIndex].value
   }

   function MM_openBrWindow(theURL,winName,features) { //v2.0
       window.open(theURL,winName,features);
   }