var timeout    = 3000;
		var closetimer = 0;
		var ddmenuitem = 0;
        var ddmenubtn = 0;
        var box_id = "";
        var btn_id = "";

		function ddmenu_open(){
		    /*if($(this).attr("id") == "first_li"){
		      $("#left_menu_img").attr('src','img/menu/left_h.gif');
		    }*/

			ddmenu_canceltimer();
		   	ddmenu_close();
		   	ddmenuitem = $(this).find('ul').css('visibility', 'visible');
            ddmenubtn = $(this).css("background-image","url('img/menu/menubg_h.gif')");

            btn_id =  $(this).attr('id');
            switch(btn_id){
               case "lavoro_li":
                    box_id = "#lavoro_box";
                    $(box_id).css("opacity","0.5");
                    break;
               case "formazione_li":
                    box_id = "#master_box";
                    $(box_id).css("opacity","0.5");
                    break;
               case "franchising_li":
                    box_id = "#franchising_box";
                    $(box_id).css("opacity","0.5");
                    break;
               case "b2b_li":
                    box_id = "#b2b_box";
                    $(box_id).css("opacity","0.5");
                    break;
               case "eventi_li":
                    box_id = "#evento_box";
                    $(box_id).css("opacity","0.5");
                    break;
            }


		}

		function ddmenu_close(){
			if(ddmenuitem){
			    ddmenuitem.css('visibility', 'hidden');
                if(!ddmenubtn.hasClass('seiqui'))
                    ddmenubtn.css("background-image","none");
                $(box_id).css("opacity","1");
            }
		}

		function ddmenu_timer(){
			closetimer = window.setTimeout(ddmenu_close, timeout);
		}

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

		$(document).ready(function(){
			$('#ddmenu > li').bind('mouseover', ddmenu_open);
		    $('#ddmenu > li').bind('mouseout',  ddmenu_timer);

		});

		document.onclick = ddmenu_close;