function open_niveau(){
	var page="niveau-service.php?TB_iframe=true&height=450&width=700";
	open_thickbox(page);
}

function open_mentions(){
	var page="mentions-legales.php?TB_iframe=true&height=450&width=700";
	open_thickbox(page);
}

function open_thickbox(page){
	var t = null;
	var a = page;
	var g = false;
	tb_show(t,a,g);
}