/* credits: http://www.onextrapixel.com/examples/horizontal-drop-down-menu/index.html */

                var timeout    = 500;
                var closetimer = 0;
                var ddmenuitem = 0;

                function ddmenu_open(){
                        ddmenu_canceltimer();
                           ddmenu_close();
                           ddmenuitem = $(this).find('ul').css('visibility', 'visible');
                }

                function ddmenu_close(){
                        if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');
                }

                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;