var timeout    = 100;
var closetimer = 0;
var ddmenuitem = 0;

function jsddm_open(){  
	jsddm_canceltimer();
    jsddm_close();
	$(this).addClass("active");
    ddmenuitem = $(this).find('ul').css('visibility', 'visible');
}
function jsddm_close(){  
	if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');
}
function jsddm_timer(){
	$(this).removeClass("active");
	closetimer = window.setTimeout(jsddm_close, timeout);
}
function jsddm_canceltimer(){  
	if(closetimer){  
		window.clearTimeout(closetimer);
      	closetimer = null;
	}
}
$(document).ready(function(){
   $('#mycustomscroll').css({
   		'height' : ($(window).height() - 362)
   });
   $('#main_Menu > li').bind('mouseover', jsddm_open)
   $('#main_Menu > li').bind('mouseout',  jsddm_timer)
});
document.onclick = jsddm_close;