#nav-wrapper { margin:0; text-align:center; clear:both; }
#nav { width:736px; z-index:10; }
#nav, #nav ul { list-style:none; margin:0 auto; padding:0; font:13px verdana; }
#nav a { text-align:center; font-weight:bold; color:#003399; display:block; background:#99ccff; text-decoration:none; padding: 4px 8px; }
#nav li { float:left; position:relative; border:solid #003399; border-width:1px 0 1px 1px; width:104px; }
#nav li li { float:none; width:104px; border-width:0 1px 1px 1px; }
#nav li li.first { border-top:1px solid #003399; }
#nav li.last { border-right:1px solid #003399; }
#nav li ul { left:-999em; position:absolute; }
#nav li:hover ul, #nav li.sfhover ul { left:0; }
#nav li a:hover, #nav li li a:hover { background:#ffffcc; }
#nav li li a { font-weight:normal; }
<!--[if IE]>
#nav li { float:left; }
#nav li a { height:1%; }
<![endif]-->