var timeout         = 500;
		var closetimer		= 0;
		var ddmenuitem      = 0;
		
		function jsddm_open()
		{	jsddm_canceltimer();
			jsddm_close();
			ddmenuitem = $(this).find('ul').eq(0).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;}}
		
		$(document).ready(function()
		{	$('#nav > li').bind('mouseover', jsddm_open);
			$('#nav > li').bind('mouseout',  jsddm_timer);});
		
		document.onclick = jsddm_close;