@charset "utf-8";
/* CSS Document */
<style>
#pad {height:200px;} /* this demo only */

#nav, #nav ul {padding:0; margin:0 auto; list-style:none; background:#fff;}
#nav {position:relative; z-index:50;}
#nav ul {display:none;}

#nav li {float:left; position:relative;}
#nav li a {text-decoration:none; font-size:18px; white-space:nowrap; font-weight: bold;}
#nav li b {display:block; padding:0 20px 0 10px; cursor:pointer; height:50px; line-height:50px; float:left; background:url(list-back.gif) center top; font-weight:bold; color:#000;}
#nav li.first b {padding-left:40px; background-position:left top;}
#nav li.last b {padding-right:30px; background-position:right top;}
#nav li a b.clicked {color:#600;}

#nav li ul {position:absolute; left:0; top:55px; height:auto; float:left; background:#f8f8f8; padding:2px; border:1px solid #aaa;}
/*
#nav li ul.w1 {width:190px;}
#nav li ul.w2 {width:130px;  }*/
#nav li ul.w3 {width:160px;}
/*
#nav li ul.w4 {width:130px;}
#nav li ul.w5 {width:150px;}  */

#nav li ul li {float:none;}
#nav li ul li a {display:block; height:20px; line-height:20px; padding:0 5px; color:#000; font-size:14px}
#nav li ul li a:hover {background:#aaa; color:#600;}
</style>