#menu {margin-left: 15px;}
ul, li, div#menu a {display:block; margin:0; padding:0; border:0;}
ul {width:180px; border:1px solid #9d9da1; background:#D9FF8E; list-style:none;} 
li.folder { position:relative; padding:1px; padding-left:0px;}		
li.folder ul {position:absolute; left:178px; top:2px; }		
div#menu a {margin-left: 1px; padding:3px; text-decoration:none; color:blue; font-weight:bold; width:auto; *width:100%; /* IE */ }
ul ul {display:none; width: 160px;}
li.folder:hover ul {display:block;}	
div#menu a:hover {background-color:#bbb7c7;}
div#menu li ul a {color: black}
.on { display:block;}