function cache(oObjet,sId){
	var oStyle = document.getElementById(sId).style;
	if (oStyle.display == "none"){
		oObjet.style.backgroundColor = "red";
		oStyle.display = "";
	}
	else {
		oObjet.style.backgroundColor = "";
		oStyle.display = "none";
	}
	
}

function fenetreCent(url,nom,largeur,hauteur,options) {
var haut=(screen.height-hauteur)/2;
var Gauche=(screen.width-largeur)/2;
fencent=window.open(url,nom,"top="+haut+",left="+Gauche+",width="+largeur+",height="+hauteur+","+options);
//fencent.focus();
}