.modal
  position: relative
  z-index: 3005

.modal_bg
  top: 0px
  left: 0px
  position: fixed
  width: 100%
  height: 100%
  background-color: #000000
  filter: alpha(opacity = 60)
  opacity: 0.6
  -moz-opacity: 0.6
  z-index: 3000
  text-align: center
  vertical-align: middle