#logo
{ background: #ffffff url('/images/logo.gif') no-repeat;
  }
  
.logocas
{ background: #ffffff url('/images/logoCAS.gif') no-repeat;
  }
  
.logoara
{ background: #ffffff url('/images/logoARA.gif') no-repeat;
  }
  
.logocat
{ background: #ffffff url('/images/logoCAT.gif') no-repeat;
  }
  
#logo img
{ border:0; width:766px; height:150px;
  }

  
  /* main content */
#content
{ width: 766px;
  overflow: hidden;
    }