#enter
  {
    display: block;
    width: 151px;
    height: 26px;
    background: url("enter-off.gif") no-repeat 0 0;

  }

  #enter:hover
  { 
    background: url("enter-on.gif") no-repeat 0 0;
  }

#view
  {
    display: block;
    width: 151px;
    height: 26px;
    background: url("trailer-off.gif") no-repeat 0 0;

  }

  #view:hover
  { 
    background: url("trailer-on.gif") no-repeat 0 0;
  }