$(function(){
                var timeout        = 500;
                var closetimer    = 0;
                var ddmenuitem    = 0;
                function jsddm01_open(){
                    jsddm01_canceltimer();
                    jsddm01_close();
                    ddmenuitem=$(this).find('ul').eq(0).css('visibility', 'visible');
                }
                function jsddm01_close(){
                    if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');
                }
                function jsddm01_timer(){
                    closetimer=window.setTimeout(jsddm01_close, timeout);
                }
                function jsddm01_canceltimer(){
                    if(closetimer){
                        window.clearTimeout(closetimer);
                        closetimer = null;
                    }
                }
                $(function(){
                    $('#jsddm01 > li').bind('mouseover', jsddm01_open);
                    $('#jsddm01 > li').bind('mouseout',  jsddm01_timer);
                });
                document.onclick=jsddm01_close;
            });