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

function jsddm_open()
{  
    jsddm_canceltimer();
    jsddm_close();
    ddmenuitem = $(this).find('ul').show();
}

function jsddm_close()
{  
    if(ddmenuitem) 
    {
        ddmenuitem.hide();
    }
}

function jsddm_timer()
{  
    closetimer = window.setTimeout(jsddm_close, timeout);
}

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

$(document).ready(function()
{  
    $('.menu > ul > li').bind('mouseover', jsddm_open)
    $('.menu > ul > li').bind('mouseout',  jsddm_timer)
});

$(document).bind('click',jsddm_close);