$(document).ready(
	function(){
		var timeout    = 400;
		var closetimer = 0;
		var ddmenuitem = 0;
	function MenuDeroulant_open(){
		MenuDeroulant_canceltimer();
		MenuDeroulant_close();
		ddmenuitem = $(this).find('ul').css('visibility', 'visible');
		}
	function MenuDeroulant_close(){
		if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');}

	function MenuDeroulant_timer(){
		closetimer = window.setTimeout(MenuDeroulant_close, timeout);}

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

	$(document).ready(function(){
	$('#MenuDeroulant > li').bind('mouseover', MenuDeroulant_open)
	$('#MenuDeroulant > li').bind('mouseout',  MenuDeroulant_timer)});
	
	document.onclick = MenuDeroulant_close;
});