enhanced-basemap-gallery-widget/src/widgets/eBasemapGallery/setting/Setting.html

This widget is enhanced to include the ability to fade between basemaps.

<div style="width:100%;">
  <div class="maps-table-div" data-dojo-attach-point="baseMapsDiv">   
    <div class='map-add-div add-basemap' data-dojo-attach-event="onclick: onAddBaseMapClick">
      <div class="add_map_image"></div>​
      <div class="add_map_text">${nls.add}</div> 
    </div>
  </div>
</div>