$().ready(function() {
	var timeout    = 200;
	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;
		}
	}
	
	$(document).ready(function(){  
		$('#sitenav > li').bind('mouseover', jsddm_open)
		$('#sitenav > li').bind('mouseout',  jsddm_timer)
	});
	document.onclick = jsddm_close;
});