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 subnavs() { // highlight current page in navContent sidebar 
	if(!document.getElementById('categoryList')) return false;
	var h1child = document.getElementById('textContent').getElementsByTagName('h1')[0].firstChild;
	var h1 = (h1child.nodeType == 3) ? h1child.nodeValue : h1child.firstChild.nodeValue;
	var navContent = document.getElementById('categoryList');
	var links = navContent.getElementsByTagName('a');
	for(i=0; i<links.length; i++) {
		if(links[i].firstChild) var text = (links[i].firstChild.nodeType == 3) ? links[i].firstChild.nodeValue : links[i].firstChild.firstChild.nodeValue;
		if((text) && text == h1) { 
			links[i].className = 'subnavHighlight';
		}
	}
}

$(document).ready(function() {
	$('#nav > li').bind('mouseover', jsddm_open)
	$('#nav > li').bind('mouseout',  jsddm_timer)
	subnavs();
});

document.onclick = jsddm_close;