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);