function CurrentNavigation() {
}
CurrentNavigation.prototype.add_current = function(host) {
	$('ul.sub_navigation a').each(function(){
		var href = this.getAttribute('href');
		href = href.replace("http://"+host, "");
		if(location.pathname.indexOf(href) != -1) {
			$(this).addClass('current');
		}
	});
}
var cn = new CurrentNavigation();