function PopupCentre(url,namepopup,largeur,hauteur,options){
		
		
		var top=(screen.height-hauteur)/2;
		var left=(screen.width-largeur)/2;
		var myopen=window.open(url,namepopup,"top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);myopen.focus();
		}