function setFilter (pImage)
   {
      document.getElementById("filter").style.display = "block";
      document.getElementById("zoom").style.display = "block";
      document.getElementById("zoom").style.backgroundImage = "url(" + pImage + ")";
   }

   function closeFilter ()
   {
      document.getElementById("filter").style.display = "none";
      document.getElementById("zoom").style.display = "none";
   }