.mattblacktabs{
width: 600;
padding-left:30px;
margin-top:-18px;
overflow: hidden;
border-top: 0px double #999999; /*bottom horizontal line that runs beneath tabs*/
}

.mattblacktabs ul{
margin: 0;
padding: 0;
padding-left: 10px; /*offset of tabs relative to browser left edge*/
font: bold 12px Arial;
list-style-type: none;
}

.mattblacktabs li{
display: inline;
margin: 0;
}

.mattblacktabs li a{
float: left;
display: block;
text-decoration: none;
margin: 0;
padding: 7px 8px; /*padding inside each tab*/
border-right: 2px solid #CCCCCC; /*right divider between tabs*/
color:#999999;
background:; /*background of tabs (default state)*/
}

.mattblacktabs li a:visited{
color:#999999;
}

.mattblacktabs li a:hover, .mattblacktabs li.selected a{
background:#999999;
color:#FFFFFF; /*background of tabs for hover state, plus tab with "selected" class assigned to its LI */
}