#screen {
  /* lo obligatorio */
  height: 300px;
  margin: 20px auto;
  overflow: hidden;
  width: 570px;
  /* lo personalizable */
  background-color: #333333;
  border: 2px solid #000099;
  padding: 10px 1px 10px 10px;
  -moz-border-radius: 10px;
  -moz-box-shadow: 1px 1px 30px #E0E9F1 inset;
}

.panel {
  float: left;
  height: 140px;
  margin: 5px;
  overflow: hidden;
  position: relative;
  width: 100px;
  opacity: .5;
}
.panel :hover{
  opacity: 1
}

.imgPanel {
  border: none;
  position:relative;
  text-decoration: none;
  opacity: .5;
}
.imgPanel :hover{
	opacity: 1;
}

/* imagen inferior */