#navtabs{
background:...
...
}

.tab{

...
;
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;
	font-weight: normal;
	background-image: none;
}

.seltab{

...
;
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;
	font-weight: bolder;
	background-image: none;
}
.singleborder {
	border: 1px solid #999999;
}