text: Demo.Button = BI.inherit(BI.Widget, {
      props: {
          baseCls: "demo-button"
      },
      render: function () {
          var items = [
              {
                  el: {
                      type: "bi.image_button",
                      src: "http://www.easyicon.net/api/resizeApi.php?id=1206741&size=128",
                      width: 100,
                      height: 100
                  }
              }
          ];
          return {
              type: "bi.left",
              vgap: 200,
              hgap: 20,
              items: items
          };
      }
  });
  BI.shortcut("demo.image_button", Demo.Button);