function menu_deroul(id,type){
	if(type==1){
	document.getElementById(id+'_ret').style.visibility='visible';
	document.getElementById('ss_'+id).style.visibility='visible';
	}else if(type==3){
	document.getElementById(id+'_ret').style.visibility='visible';
	}else if(type==4){
	document.getElementById(id+'_ret').style.visibility='hidden';
	}else{
	document.getElementById(id+'_ret').style.visibility='hidden';
	document.getElementById('ss_'+id).style.visibility='hidden';
	}
}

function PopupCentrer(page,largeur,hauteur,options) {
  var top=(screen.height-hauteur)/2;
  var left=(screen.width-largeur)/2;
  window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}