https://tdmd.ru/js/menu.js

1            var timeout    = 500;
2            var closetimer = 0;
3            var ddmenuitem = 0;
4
5            function jsddm_open()
6            {  jsddm_canceltimer();
7            jsddm_close();
8            ddmenuitem = $(this).find('ul').css('visibility', 'visible');}
9
10            function jsddm_close()
11            {  if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');}
12
13            function jsddm_timer()
14            {  closetimer = window.setTimeout(jsddm_close, timeout);}
15
16            function jsddm_canceltimer()
17            {  if(closetimer)
18            {  window.clearTimeout(closetimer);
19            closetimer = null;}}
20
21            $(document).ready(function()
22            {  $('#jsddm > li').bind('mouseover', jsddm_open)
23            $('#jsddm > li').bind('mouseout',  jsddm_timer)});
24
25            document.onclick = jsddm_close;