function display_desc(id){
	
	for(var i=1;i<=11;i++){
		var d=$('myDesc'+i);
		d.style.display="none";
	}
	
	var  c= $('curseur');
	newPos = 60 * (id-1)+"px";
	oldPos = c.style.left;
	if(oldPos==""){oldPos="0px"}
	
	var  e= $('myDesc'+id);
	e.style.display="block";
	
	var f=$('information');
	f.style.display="none";

	
	$('curseur').setBar = function(p){
		this.setStyle('left: '+p+'px');
	};
	
	lenNewPos = newPos.length;
	newPos = newPos.substring(0,lenNewPos-2);
	
	lenOldPos = oldPos.length;
	oldPos = oldPos.substring(0,lenOldPos-2);


	new Effect.Tween('curseur', oldPos, newPos, { duration: 0.5 }, 'setBar');
	
}