code: function handleLoaded( responseData, status, xhr )
    {
  
      _.assert( arguments.length === 3 );
  
      if( status != 'error' && o.replacing ) try
      {
        _.assert( _.strIs( responseData ) );
        responseData = $( responseData );
      }
      catch( err )
      {
        status = 'error';
        reason = _.err( err );
      }
  
      if( status === 'error' )
      {
        var reason ;
        if( _.objectIs( xhr ) )
        reason = xhr.status + ' : ' + xhr.statusText;
        else
        reason = responseData.status + ' : ' + responseData.statusText;
        reason += ' : ' + o.url;
        var html = 'Error ' + reason;
        targetDom.html( html );
        var err = _.errLogOnce( reason );
        o.ready.error( err );
        o.once.error( err );
        return;
      }
  
      if( o.replacing )
      {
        var classes = _.domClasses( targetDom );
        var attrs = _.domAttrs( targetDom );
        targetDom = targetDom.replaceWith( responseData );
        targetDom = responseData;
  
        if( o.targetClass )
        _.domClasses( targetDom,o.targetClass,1 );
  
        if( o.preservingAttributes )
        _.domAttrs( targetDom,attrs,1 );
        if( o.preservingClasses )
        _.domClasses( targetDom,classes,1 );
      }
  
      o.parentDom.attr( 'dom-loaded',1 );
  
      show();
  
      o.ready.give( targetDom );
      o.once.give( targetDom );
  
    }
docs: /*