var drop_down = function(c)
	{

		var nav = new YAHOO.util.Element(c.id);

		var lis = nav.getElementsByTagName('li');

		var as = nav.getElementsByTagName('a');

		for(var i = 0; i < as.length; i++)
		{

			var a = new YAHOO.util.Element(as[i]);

			a.set("title", "");

		};

		for(var i = 0; i < lis.length; i++)
		{


			var lnk = function(inst)
			{

				var a = new YAHOO.util.Element(inst.getElementsByTagName('a')[0]);

				var drop_down = new YAHOO.util.Element(inst.getElementsByTagName('ul')[0]);

				a.setStyle("background-image", "url(images/main-nav-has-children.jpg)");

				inst.on("mouseover", function(){

					drop_down.setStyle("display", "block");

					a.setStyle("background-position", "-175px 0px");
					a.setStyle("color", "#000");

				});

				inst.on("mouseout", function(){

					drop_down.setStyle("display", "none");

					var pos;

					if(a.get('element').className == "selected")
					{
						pos = "2px 0px"; 
					
					} else {
					
						pos = "-352px 0px";
					
					};
					
					a.setStyle("background-position", pos);
					a.setStyle("color", "#fff");

				});

			};

			////////////////////////////////////////////////////////////

			var li = new YAHOO.util.Element(lis[i]);

			var uls = li.getElementsByTagName('ul');

			if(uls.length > 0)
			{

				new lnk(li);

			};


		};

	};