$(document).ready(function(){
	var dt = 0;
	$("#navigation .sel").addClass("open");
	$("#navigation li.dropdown").hover(function(){
		if (!$(this).hasClass("open")) {
			var ob = $(this);
			dt = setTimeout(function(){openMenu(ob);},250); 
		}
  },
  function(){
		clearTimeout(dt);
  });
	$("#navigation").hover(function(){ },
	function(){
		if (!$("#navigation .open").hasClass("sel")) {
			openMenu($("#navigation .sel"));
		}
	});
});
function openMenu(ob){
	$("#navigation .open").removeClass("open").children("ul").slideUp("fast");
	ob.addClass("open").children("ul").slideDown("fast");
}