#photos {
  border: 1px solid #BEBEBE;
  height: 400px;
  overflow: hidden;
  position: relative;
  width: 400px;
}

#photos ul {
  left: 0;
  list-style-type: none;
  margin: 0;
  padding: 0;
  position: absolute;
  top: 0;
  width: 4000px;
}

#photos li {
  float: left;
}

#photos .trigger {
  left: 0;
  position: absolute;
  top: 0;
  z-index: 10;
  text-indent: -9999px;
  height: 400px;
  width: 400px;
  display: block;
}

