.xiala ul { display:none; width:130px; height:auto; background:#303c4c; position:absolute; z-index:999; margin:0px; padding:0px;opacity:0.9;}
.xiala ul li {margin:0px; text-align:center; width:100px; height:30px; float:left; background:url(/images/xldian.png) no-repeat 5px center; padding-left:0px;}
.xiala ul li a { font-weight:normal; font-size:14px;color:#fff; text-align:center; line-height:30px; float:left; height:30px; width:130px;}
.xiala ul li a:hover{text-decoration:underline; background:none; color:#303c4c;background:#fff;width:130px;}
/*
$('.xiala').mousemove(function () {
                $(this).find('ul').slideDown();//you can give it a speed
            });
            $('.xiala').mouseleave(function () {
                $(this).find('ul').slideUp("fast");
            });
    */