function popupcentree(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);
}

function switchLangue(url, bpanum, bpaadd) {
	var ajaxurl = HTTP_MAIN + 'ajax/generateTokenLogin.php?url=' + url
			+ '&bpanum=' + bpanum + '&bpaadd=' + bpaadd;
	var req = new Ajax.Request(ajaxurl, {
		method : 'get',
		onSuccess : function(transport) {
			var result = transport.responseText.evalJSON(true);

			if (result.result == true) {
				document.location = result.url;
			} else {
				document.location = this.options[this.selectedIndex].value;
			}
		}
	});
}