#menu {
width: 100%;
background-color:#4c89cb;
float: left;
z-index: 500;
}
#menu ul {
list-style: none;
margin: 0;
padding: 0;
width: 115px;
float: left;
}

#menu ul a {
font: bold 12px/16px "Trebuchet MS", arial, helvetica, sans-serif;
display: block;
margin: 0;
padding: 2px 3px;
color: #ffffff;
background-image: url(../assets/img/navButton.gif);
}

#menu ul a:hover {
color: #4c89cb;
background-image: url(../assets/img/navButtonHover.gif);
}

#menu ul ul a {
font: 10px/16px "Trebuchet MS", arial, helvetica, sans-serif;
display: block;
border-width: 1px;
border-style: solid;
border-color: #4886CA;
margin: 0;
padding: 2px 3px;
color: #fff;
background: #4886CA;
text-decoration: none;
filter:alpha(opacity=85);-moz-opacity:.85;opacity:.85; 
}
#menu ul ul a:hover {
color: #4886CA;
background: #fff;
border-color:#4886CA;
filter:alpha(opacity=100);-moz-opacity:1;opacity:1; 
}
#menu li {position: relative;}

#menu ul ul ul {
position: absolute;
top: 0;
left: 100%;
width: 100%;
}
#menu ul ul {
position: absolute;
z-index: 500;
top:100%;
left:0;
width: 102%;

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

<!--[if IE]>
<style type="text/css" media="screen">
body {
behavior: url(csshover.htc);
font-size: 100%;
} 
#menu ul li {float: left; width: 100%;}
#menu ul li a {height: 1%;} 

#menu a {
font: bold 0.7em/1.4em "Trebuchet MS", arial, helvetica, sans-serif;
} 
</style>
<![endif]-->