function toggle( modpage ) {
 switch ( modpage ) {
  case 'torrent_info' :
  case 'torrent_trackers' :
  case '_info' : {
   document.getElementById( 'throttleupinput' ).style.display = 'none';
   document.getElementById( 'throttledowninput' ).style.display = 'none';
   document.getElementById( 'tsubmit' ).style.display = 'none';

   document.getElementById( 'throttleup' ).style.display = '';
   document.getElementById( 'throttledown' ).style.display = '';

   break;
  }
  case '_info_restore' : {
   document.getElementById( 'throttleupinput' ).style.display = '';
   document.getElementById( 'throttledowninput' ).style.display = '';
   document.getElementById( 'tsubmit' ).style.display = '';

   document.getElementById( 'throttleup' ).style.display = 'none';
   document.getElementById( 'throttledown' ).style.display = 'none';

   break;
  }
  case 'addtorrent_info' : {
   document.getElementById( 'torrenturl' ).style.display = 'none';

   break;
  }
  case 'torrent_files' : {
   var uls = document.getElementsByTagName( 'ul' );
   for ( i = 0; i < uls.length; i++ ) {
    if ( uls.item( i ).getAttribute( 'class' ) == 'directory' ) {
     uls.item( i ).style.display='none';
    }
   }

   document.getElementById( 'throttleupinput' ).style.display = 'none';
   document.getElementById( 'throttledowninput' ).style.display = 'none';
   document.getElementById( 'tsubmit' ).style.display = 'none';

   document.getElementById( 'throttleup' ).style.display = '';
   document.getElementById( 'throttledown' ).style.display = '';

   break;
  }
 }
}