docs: function(panels, patternData, iframePassback, switchText) {
  
      // count how many panels have rendered content
      var panelContentCount = 0;
      for (var i = 0; i < panels.length; ++i) {
        if (panels[i].content !== undefined) {
          panelContentCount++;
        }
      }
  
      // see if the count of panels with content matches number of panels
      if (panelContentCount === Panels.count()) {
        panelsViewer.renderPanels(panels, patternData, iframePassback, switchText);
      }
  
    }