var new_win = null;

function ShowImage(url, desc, width, height)
{
	width+=40;
	height+=80;
	if (new_win)
		new_win.close();
  url='photo.php?url='+escape(url)+'&desc='+desc;
  new_win = window.open(url,"Okienko","toolbar=no, menubar=no, directories=no, width="+width+", height="+height+", resizable=yes") ;
  new_win.focus();
  return false;
}