function PopupCentrer(haut,larg,url,nom,option) 
{
	var top=(screen.height-haut)/2;
	var left=(screen.width-larg)/2;
	if(option!= "")
		option = "top="+top+",left="+left+","+option;
	return window.open(url,nom,option);
}

function PopupCentrerBis(haut,larg,url,nom,option) 
{
	var top=(screen.height-haut)/2;
	var left=(screen.width-larg)/2;
	if(option!= "")
		option = "top="+top+",left="+left+","+option;
	return window.open(url,nom,option);
}