div#tab_menu {
  position:relative;
  border:2px solid #eeeeed;
  width:539px;
  height:23px;
}

div#tab a {
  position:relative;
  float:left;
  height:25px;
  width:140px;
  margin-left:8px;
  text-align:center;
}

div#tab a:hover {
  position:relative;
  float:left;
  height:25px;
  width:140px;
  margin-left:8px;
  text-align:center;
}

div#tab_active a {
  position:relative;
  float:left;
  display:inline;
  height:25px;
  width:140px;
  text-align:left;
  margin-left:8px;
  font-weight:bold;
  text-align:center;
}