function open_navigator() {
	setup = "scrollbars=1,toolbar=0,location=0,directories=0,status=0,resizable=1,width=400,height=600";
	menuWindow = window.open("", "MenuWindow", setup);
	
	if (menuWindow != null) {
       menuWindow.location.href = "index.php?article_id=75&clang=0";
       menuWindow.focus();
	}
}