a.main_link {
  display: block;
  height: 100%;
  left:0;
  position: absolute;
  top: 0;
  width: 100%;
  background-color: #fff;
  opacity: 0;
  filter: alpha(opacity=00);
}

.disabled {
  /*opacity: .2 !important;
  filter: alpha(opacity=20) !important;*/
}

div.overlay {
  background-color: #000;
  opacity: 0.6;
  filter: alpha(opacity=60);
  z-index: -1;
}