var timeout=500;var closetimer=0;var ddmenuitem=0;function nav_open()
{nav_canceltimer();nav_close();ddmenuitem=$(this).find('ul').css('visibility','visible').css('z-index','1000');}
function nav_close()
{if(ddmenuitem)ddmenuitem.css('visibility','hidden');}
function nav_timer()
{closetimer=window.setTimeout(nav_close,timeout);}
function nav_canceltimer()
{if(closetimer)
{window.clearTimeout(closetimer);closetimer=null;}}
$(document).ready(function()
{$('#nav > li').bind('mouseover',nav_open)
$('#nav > li').bind('mouseout',nav_timer)});document.onclick=nav_close;