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

function jsddm_open()
{  jsddm_canceltimer();
   jsddm_close();
   ddmenuitem = $(this).find('ul').css('visibility', 'visible');}

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

function jsddm_timer()
{  closetimer = window.setTimeout(jsddm_close, timeout);}

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

function swapImage(){
	var img = this.getElementsByTagName('img')[0]
    var newSrc = img.src.replace('.gif', '-over.gif');
    img.src = newSrc;
}

function restoreImage() {
	var img = this.getElementsByTagName('img')[0]
    var newSrc = img.src.replace('-over', '');
    img.src = newSrc;
}

$(document).ready(function()
{  
   $('#menu > li').bind('mouseover', jsddm_open);
   $('#menu > li').bind('mouseout',  jsddm_timer);
   $('#footer > ul > li > a').bind('mouseover',  swapImage);
   $('#footer > ul > li > a').bind('mouseout',  restoreImage);
 });

document.onclick = jsddm_close;