Event.observe(window,'load',function()
{

	if($('liste_message')){
		$$('.a_detail').each( function(e){
			Event.observe(e,'click',function(){
				if(e.up(1).next().style.display == 'none'){
					new Effect.BlindDown(e.up(1).next(),{duration:0.5});
				}else{
					new Effect.BlindUp(e.up(1).next(),{duration:0.5});
				}
			});									  
		});
	}
	
	
});