#menu {
width: 100%;
float: center;
z-index: 1;
}

#menu ul {
list-style: none;
margin: 0;
padding: 0;
width: 129px;
height: 26px;
float: left;
}
#menu a, #menu h2 {
font: bold 11px/16px arial, helvetica, sans-serif;
display: block;
border-width: 0px;
border-style: solid;
border-color: #ccc #888 #555 #bbb;
margin: 0;
padding: 2px 3px;
}
#menu h2 {
color: #323232;
}
#menu a {
color: #000000;
background: #efefef;
text-decoration: none;
}

#menu a:hover {
color: #1765a1;
background: #ffffff;
}

#menu li {position: relative;}

#menu ul ul {
position: absolute;
z-index: 500;
}

#menu ul ul ul {
position: absolute;
top: 0;
left: 100%;
}

div#menu ul ul,
div#menu ul li:hover ul ul,
div#menu ul ul li:hover ul ul
{display: none;}

div#menu ul li:hover ul,
div#menu ul ul li:hover ul,
div#menu ul ul ul li:hover ul
{display: block;}
</style>

<!--[if IE ]>
<style type="text/css" media="screen">
 #menu ul li {float: left; width: 100%;}

</style>
<![endif]-->


<!--[if lt IE 7]>
<style type="text/css" media="screen">
body {
behavior: url(csshover.htc);
font-size: 100%;
}
#menu ul li a {height: 20px;} 

#menu h2 {
font: bold 12px arial;
}
#menu a  {
font: bold 11px arial;
}
<![endif]-->