.top_banner {
  background: #4e070b;
  height: 56px;
  width: 100%;
}
.top_banner2 {
  background: url(../images/bg-title5.jpg) no-repeat 0 0 #4e070b;
  height: 56px;
  margin: 0 auto;
  position: relative;
  width: 980px;
}
.top_banner a:link{
  color: #333;
  text-decoration: none;
}
.top_banner a:visited{
  color: #333;
  text-decoration: none;
}
.top_banner a:hover{
  color: #e26133;
  text-decoration: none;
}
.top_banner a:active{
  color: #e26133;
  text-decoration: none;
}
a.link_ntnu {
  display: none;
  width: 189px;
  position: absolute;
  left: 0;
  top: 0;
}
.top_banner a {
  display: block;
  height: 56px;
  overflow: hidden;
  text-indent: 100%;
  white-space: nowrap;
}