addListener( window, 'load', function() {
  var root = document.getElementById( 'lot-col-droite' );
  if ( root ) {
    var h3 = root.getElementsByTagName( 'h3' );
    for ( var i=0; i<h3.length; i++ )
      addListener( h3[ i ], 'click', function( e ) {
        DOMEvent.stopEvent( e );
        var target = DOMEvent.getTarget( e );
        target.parentNode.className = ( target.parentNode.className.indexOf( '-on' ) != -1 )
          ? 'bk-domaine-descri-off'
          : 'bk-domaine-descri-on';
      } );
  }
} );