Html +Css

<style type="text/css">
    #headlabel{

border-style: none;
    border-color: inherit;
    border-width: 2;
    padding: 0;
    margin: 0 0 0px;
    height:32px;

background:#990000;
    top: 0px;
    left: 0px;
    }

ul,li{margin:0 0 6px 6px;padding:0;}


ul#networknav{text-align:left;margin:4px 0 0;font:normal 14px georgia, verdana, sans-serif;border:0;list-style-type:none;padding:5px 10px 2px;background-color:transparent;}
ul#networknav li{float:left;
    width: 154px;
    text-align: center;
    }
ul#networknav li a{padding:2px 10px;background-color:transparent;color:#fff;margin-right:0;text-decoration:none;font-size: medium;
        border-left-style: none;
        border-left-color: inherit;
        border-left-width: 0;
        border-right-style: none;
        border-right-color: inherit;
        border-right-width: 0;
        border-top-style: none;
        border-top-color: inherit;
        border-top-width: 0;
        border-bottom-style: none;
        border-bottom-color: inherit;
        border-bottom-width: medium;
    }
ul#networknav a:hover{color:#000;background:#fff;}
ul#networknav li ul{position:absolute;width:10em;left:-999em;}
ul#networknav li:hover a,li.sfHover a{background-color:white;color:black;}

ul#networknav li:hover ul,ul#networknav li.sfHover ul{left:auto;border:1px solid #B80103;border-top:none;background-color:white;margin-top:2px;margin-left:-1px;-o-box-shadow:5px 5px 5px rgba(170,170,170,0.5);-icab-box-shadow:5px 5px 5px rgba(170,170,170,0.5);-khtml-box-shadow:5px 5px 5px rgba(170,170,170,0.5);-moz-box-shadow:5px 5px 5px rgba(170,170,170,0.5);-webkit-box-shadow:5px 5px 5px rgba(170,170,170,0.5);box-shadow:5px 5px 5px rgba(170,170,170,0.5);width:135px;}
ul#networknav li:hover ul li,ul#networknav li.sfHover ul li{display:block;margin-left:0;margin-bottom:0;padding-left:0;list-style-type:none;}
ul#networknav li:hover ul li a,ul#networknav li.sfHover ul li a{display:block;width:115px;color:black;padding:5px 10px;}
ul#networknav li:hover ul li a:hover,ul#networknav li.sfHover ul li a:hover{color:#BB0103;background-color:rgb(245,245,245);}


</style>

<div id="headlabel">
<ul id="networknav">

<li><a href="http://computertechtalks.blogspot.com/search/label/Computer%20Science">Computer Science</a>

<ul>
</ul>
<li ><a href="http://computertechtalks.blogspot.com/search/label/Gadgets">Gadgets</a>
<li ><a href="http://computertechtalks.blogspot.com/search/label/Games">Games</a>
<li  ><a href="http://computertechtalks.blogspot.com/search/label/Softwares">Softwares</a>
<li ><a href="http://computertechtalks.blogspot.com/search/label/Technology">Technology</a>
<li  ><a href="http://computertechtalks.blogspot.com/search/label/Tips%20n%20Tricks">Tips n Tricks</a>
<li  ><a href="http://computertechtalks.blogspot.com/search/label/Web">Web</a>
</li></li></li></li></li></li></li></ul>
</div>