var hidetimer;

document.addEvent('domready', function() {
Element.implement({
show: function() {
 this.setStyle('display','block');
},
hide: function() {
 this.setStyle('display','none');
 }
 });

$('nav_top2').getElements('a').addEvents({
    'mouseenter': function(){
        clearTimeout(hidetimer);
        hideall();
        $('nav_bigmenu').getElement('#nav_'+this.id).show();
    },
    'mouseleave': function(){
        hidetimer = setTimeout("hideall()", 100);
    }
});

$('nav_bigmenu').addEvents({
    'mouseenter': function(){
        clearTimeout(hidetimer);
    },
    'mouseleave': function(){
        hidetimer = setTimeout("hideall()", 100);
    }
});


});

function hideall() {
    $('nav_bigmenu').getElements('li.mod_sitemap').hide();
}