window.addEvent('domready', function(e){
    var lis = $('services-list').getElements('li');
    var selected_li = lis[0];
    $each(lis, function(/* Element */item){
        var a = item.getElement('a');
        a.addEvent('click', function(e){
            new Event(e).stop();
            if(!this.getParent().hasClass('selected')) {
                var opened_div = selected_li.removeClass('selected').getElement('a').get('href').match(/#(.+)/)[1];
                var div_to_open = this.get('href').match(/#(.+)/)[1];
                $(opened_div).hide();
                $(div_to_open).show();
                selected_li = this.getParent().addClass('selected');
            }
        });
    });
});