function closeWindow()
  {
    window.close()
  }
    
  function fullwin()
  {
   window.open(self.location.href,"",",scrollbars")
  }
  
   function swap(i,j)
  {
    if(document.images)
    {
        var imgi = document["tray" + i].src;
        var imgj = document["tray" + j].src;
        document["tray" + i].src=imgj;
        document["tray" + j].src=imgi;
     }
  }

  function onShuffleTray()
  {
    if(document.images)
    {
      for(var i=0;i<6;i++)
      {
        var j = 1+i+Math.random()*(6-i);
        j = Math.floor(j);
        var imgi = document["tray"+i].src;
        var imgj = document["tray"+j].src;
        document["tray"+i].src=imgj;
        document["tray"+j].src=imgi;
      }
    }
  }

  function onSortTray()
  {
    if(document.images)
    {
      var s = [];
      for(var i=0;i<7;i++) s[s.length] = document["tray" + i].src;
      s.sort();
      for(var i=0;i<7;i++) document["tray" + i].src = s[i];
    }
  }