var timeout    = 500;
var closetimer = 0;
var ddmenuitem = 0;

function navbar_open() {
 navbar_canceltimer();
 navbar_close();
 ddmenuitem = $(this).find('ul').css('visibility', 'visible');
}

function navbar_close() {
 if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');
}

function navbar_timer() {
 closetimer = window.setTimeout(navbar_close, timeout);
}

function navbar_canceltimer() {
 if(closetimer) {
  window.clearTimeout(closetimer);
  closetimer = null;
 }
}

$(document).ready(function() {
 $('#navbar > li').bind('mouseover', navbar_open);
 $('#navbar > li').bind('mouseout',  navbar_timer);

 var current = 0;
 var anchors = $('#navbar a');
 for(var i = 0; i < anchors.length; i++) {
  if (anchors[i].href === document.location.href){
   current = i;
  }
 }
 $(anchors[current]).addClass("current");
});

document.onclick = navbar_close;