ul.topnav {
font-family:Verdana, Arial, Helvetica, sans-serif;
    list-style: none;  
    padding: 0 20px;  
    margin: 0;  
    float: left;  
    width: 500px;  
    background: #222;  
    font-size: 0.9em;  
    background: url(http://www.sohtanaka.com/web-design/examples/drop-down-menu/topnav_bg.gif) repeat-x;
}  


ul.topnav li {  
    float: left;  
    margin: 0;  
    padding: 0 15px 0 0;  
    position: relative; /*--Declare X and Y axis base for sub navigation--*/  
}  
ul.topnav li a{  
    padding: 8px 5px;  
    color: #fff;  
    display: block;  
    text-decoration: none;  
    float: left;  
}  
ul.topnav li a:hover{  
    background: url(http://www.sohtanaka.com/web-design/examples/drop-down-menu/topnav_hover.gif) no-repeat center top;  
}  
ul.topnav li span { /*--Drop down trigger styles--*/  
    width: 17px;  
    height: 35px;  
    float: left;  
    background:  no-repeat center top;
	background-image:url(../images/subnav_btn.png);
}  
ul.topnav li span.subhover {background-position: center bottom; cursor: pointer;} /*--Hover effect for trigger--*/
ul.topnav li ul.subnav {
	list-style: none;
	position: absolute; /*--Important - Keeps subnav from affecting main navigation flow--*/
	left: 0; top: 35px;
	background: #333;
	margin: 0; padding: 0;
	display: none;
	float: left;
	width: 170px;
	-moz-border-radius-bottomleft: 5px test;
	-moz-border-radius-bottomright: 5px;
	-webkit-border-bottom-left-radius: 5pxtest;
	-webkit-border-bottom-right-radius: 5px;
	border: 1px solid #111;
}
ul.topnav li ul.subnav li{  
    margin: 0; padding: 0;  
    border-top: 0px solid #252525; /*--Create bevel effect--*/  
    border-bottom: 1px solid #444; /*--Create bevel effect--*/  
    clear: both;  
    width: 170px;  
}  
html ul.topnav li ul.subnav li a {  
    float: left;  
    width: 145px;  
    background: #333 url(http://www.sohtanaka.com/web-design/examples/drop-down-menu/dropdown_linkbg.gif) no-repeat 10px center;  
    padding-left: 20px;  
}  
html ul.topnav li ul.subnav li a:hover { /*--Hover effect for subnav links--*/  
    background: #222 url(http://www.sohtanaka.com/web-design/examples/drop-down-menu/dropdown_linkbg.gif) no-repeat 10px center;  
}