window.addEvent('domready', function() {

   $$('.lien').each(function(el){
     el.addEvent('mouseover', changeimage);
     el.addEvent('mouseout', changeimage);
   });

   $$('.lienmenu').each(function(el2){
     el2.addEvent('mouseover', changeimagepng);
     el2.addEvent('mouseout', changeimagepng);
   });

 });

	function changeimage(e){
	e = new Event(e);
	var currentSrc = e.target.src;
   e.target.src = e.target.OldSrc == undefined ? e.target.src.replace('.gif','-sel.gif') : e.target.OldSrc;
   e.target.OldSrc = currentSrc;
	}

	function changeimagepng(e){
	e = new Event(e);
     var currentSrc = e.target.src;
   e.target.src = e.target.OldSrc == undefined ? e.target.src.replace('.png','-sel.png') : e.target.OldSrc;
   e.target.OldSrc = currentSrc;
	}