#mm_nav {padding: 0;margin: 0;display:block;list-style:none;text-align:left;}
#mm_nav .mm_sub_nav {background-color:#fff;border-color:#333;border-style:solid;border-width:0 1px 1px 1px;}
#mm_nav li .mm_sub_nav a:hover {background:#666;}
#mm_nav li:hover .mm_sub_nav li .mm_sub_nav{border-width:1px;}