cara buat menu gantung

kode css
ul#css3menu1,ul#css3menu1 ul{
    margin:0;list-style:none;background-color:#000;background-image:url("mainbk.png");background-repeat:repeat;border-width:0px;border-style:solid;border-color:#162436;-moz-border-radius:4px;-webkit-border-radius:4px;border-radius:4px;}
ul#css3menu1 ul{
    display:none;position:absolute;left:0;top:100%;-moz-box-shadow:0.7px 0.7px 1px #3E3E3E;-webkit-box-shadow:0.7px 0.7px 1px #3E3E3E;box-shadow:0.7px 0.7px 1px #3E3E3E;padding:0 9px 9px;background-color:#253a56;background-image:none;border-width:1px;border-radius:4px;-moz-border-radius:4px;-webkit-border-radius:4px;border-style:solid;border-color:#162436;}
ul#css3menu1 li:hover>*{
    display:block;}
ul#css3menu1 li:hover{
    position:relative;}
ul#css3menu1 ul ul{
    position:absolute;left:100%;top:0;}
ul#css3menu1{
    padding:1px 1px 1px 0;display:block;font-size:0;float:left;}
ul#css3menu1 li{
    display:block;white-space:nowrap;font-size:0;float:left;}
ul#css3menu1>li,ul#css3menu1 li{
    margin:0 0 0 1px;}
ul#css3menu1 ul>li{
    margin:1px 0 0;}
ul#css3menu1 a:active, ul#css3menu1 a:focus{
    outline-style:none;}
ul#css3menu1 a,ul#css3menu1 a.pressed{
    display:block;vertical-align:middle;text-align:left;text-decoration:none;font:bold 12px Arial;color:#ffffff;cursor:default;}
ul#css3menu1 ul li{
    float:none;margin:9px 0 0;}
ul#css3menu1 ul a{
    text-align:left;padding:8px 0 0 0;background-color:#253a56;background-image:none;border-width:1px 0 0 0;border-style:solid;border-color:#293344;border-radius:0px;-moz-border-radius:0px;-webkit-border-radius:0px;font:13px Arial;color:#cccccc;text-decoration:none;}
ul#css3menu1 li:hover>a{
    background-color:#5484c3;border-style:none;font:bold 12px Arial;color:#ffffff;text-decoration:none;background-image:url("mainbk.png");background-position:0 100px;}
ul#css3menu1 img{
    border:none;vertical-align:middle;margin-right:10px;}
ul#css3menu1 img.over{
    display:none;}
ul#css3menu1 li:hover > a img.def{
    display:none;}
ul#css3menu1 li:hover > a img.over{
    display:inline;}
ul#css3menu1 li a.pressed img.over{
    display:inline;}
ul#css3menu1 li a.pressed img.def{
    display:none;}
ul#css3menu1 span{
    display:block;overflow:visible;background-position:right center;background-repeat:no-repeat;padding-right:0px;}
ul#css3menu1 a{
    padding:10px;background-color:#ffffff;background-image:url("mainbk.png");background-repeat:repeat;background-position:0 200px;border-width:0px;border-style:none;border-color:;color:#ffffff;text-decoration:none;}
ul#css3menu1 li:hover>a,ul#css3menu1 li>a.pressed{
    background-color:#5484c3;background-image:url("mainbk.png");background-position:0 100px;border-style:none;color:#ffffff;text-decoration:none;}
ul#css3menu1 ul li:hover>a,ul#css3menu1 ul li>a.pressed{
    background-color:#253a56;background-image:none;border-style:solid;border-color:#293344;font:13px Arial;color:#ffffff;text-decoration:none;}
ul#css3menu1 li.topfirst>a{
    height:15px;line-height:15px;border-radius:4px 0 0 4px;-moz-border-radius:4px 0 0 4px;-webkit-border-radius:4px;-webkit-border-top-right-radius:0;-webkit-border-bottom-right-radius:0;text-shadow:#000000 0px -1px 1px;}
ul#css3menu1 li.topfirst:hover>a,ul#css3menu1 li.topfirst>a.pressed{
    line-height:15px;text-shadow:#3d3d3d 0px -1px 1px;}
ul#css3menu1 li.topmenu>a{
    height:15px;line-height:15px;text-shadow:#000000 0px -1px 1px;}
ul#css3menu1 li.topmenu:hover>a,ul#css3menu1 li.topmenu>a.pressed{
    line-height:15px;text-shadow:#3d3d3d 0px -1px 1px;}
ul#css3menu1 li.toplast>a{
    height:15px;line-height:15px;border-radius:0 4px 4px 0;-moz-border-radius:0 4px 4px 0;-webkit-border-radius:0;-webkit-border-top-right-radius:4px;-webkit-border-bottom-right-radius:4px;text-shadow:#000000 0px -1px 1px;}
ul#css3menu1 li.toplast:hover>a,ul#css3menu1 li.toplast>a.pressed{
    line-height:15px;text-shadow:#3d3d3d 0px -1px 1px;}
ul#css3menu1 ._>li>a{
    padding:0;}
ul#css3menu1 li.subfirst>a{
    border-width:0;border-style:none;padding:0;}
ul#css3menu1 li.subfirst:hover>a,ul#css3menu1 li.subfirst>a.pressed{
    border-style:none;}

kode html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8" />
    <link rel="stylesheet" href="h.css3prj_files/css3menu1/style.css" type="text/css" />

</head>
<body style="background-color:#EBEBEB">
<ul id="css3menu1" class="topmenu">
    <li class="topfirst"><a href="#" title="Item 0" style="height:15px;line-height:15px;">Item 0</a></li>
    <li class="topmenu"><a href="#" title="Item 1" style="height:15px;line-height:15px;"><span>Item 1</span></a>
    <ul>
        <li class="subfirst"><a href="#" title="Item 1 0">Item 1 0</a></li>
        <li><a href="#" title="Item 1 1">Item 1 1</a></li>
        <li><a href="#" title="Item 1 2">Item 1 2</a></li>
    </ul>

    </li>
    <li class="toplast"><a href="#" title="Item 2" style="height:15px;line-height:15px;">Item 2</a></li>
</ul>


<p style="display:none"><a href="http://css3menu.com/">CSS Pulldown Menus Css3Menu.com</a></p>
</body>
</html>