/// defil part

function defile_part(){ 
	var obj_contenu = document.getElementById('centenu_part');
	var obj_conteneur = document.getElementById('centeneur_part');

	if(parseInt(obj_contenu.offsetHeight) > parseInt(obj_conteneur.offsetHeight) ){ 
		if(parseInt(obj_contenu.style.top) < ((parseInt(obj_contenu.offsetHeight) - parseInt(obj_conteneur.offsetHeight)) * -1) )  obj_contenu.style.top = 0 + "px" ;
		
		obj_contenu.style.top = parseInt(obj_contenu.style.top)  - 1 +"px";
		movepart= setTimeout("defile_part()", 50);
	}
}

function stop_part(){
	clearTimeout(movepart)
}