.nav {  overflow:hidden; float:right; margin:0 0 0 0px;}
.nav .two_nav{ z-index:100;}
.nav ul li { float:left;}
.nav ul li a { width:120px; height:40px; text-align:center; line-height:40px; display:block; font-size:14px; font-weight:600;}
.nav ul li a:hover{ color:#db7231; }
.nav ul li ul { position:absolute; display:none;}
.nav ul li ul li { float:none;}
.nav ul li ul li a { border-right:none; border-bottom:1px dotted #ccc; background:#FFFFFF;}
.nav ul li:hover ul{ display:block; }