$(document).ready(function() {

	$("#menuIstituzionale li ul").hide();
	
	var toggle = function(direction, display) {
		return function() {
		  var self = this;
		 // var ul = $("ul", this);
		 var ul = $(this).children("ul");
		  if( ul.css("display") == display && !self["block" + direction] ) {
			self["block" + direction] = true;
			ul["slide" + direction](400, function() {
			  self["block" + direction] = false;
			});
		  }
		};
	  }


	$("#menuIstituzionale li").hover(toggle("Down", "none"), toggle("Up", "block"));


});// document ready