function set_accent(href) {
	var anchor = /#anchor_(.+)/.exec(href);
	if (anchor) {
		anchor = anchor[1];
		$('h1.selected').removeClass('selected');
		$('h1#h1_'+anchor).addClass('selected');
	}
}

$('#top_menu > li > a').click(function() {	
	set_accent(this.href);
});
set_accent(location.href);