$(document).ready(function() {
    $('.toplevel').hover(
    function() {
        $('.drop_down').hide();
        var relation = $(this).attr('rel');
        $('div[rel=' + relation + ']').show();
        $(this).addClass('hoveredon');
    },
    function() {

        var relation = $(this).attr('rel');
        $('div[rel=' + relation + ']').hover(
        function() {
            $('.drop_down').hide();
            $('div[rel=' + relation + ']').show();
            $('a[rel=' + relation + ']').addClass('hoveredon');
        },
        function() {
        $('div[rel=' + relation + ']').hide();
        $('a[rel=' + relation + ']').removeClass('hoveredon');
        });

    });
    $('.toplevel').mouseout(function() {
    $('.drop_down').hide();
    $(this).removeClass('hoveredon');       
    });

});