<com:TForm> <h1>ActivePanel Visible Test</h1> <com:TActiveRadioButton ID="rbA" Checked="true" GroupName="group1" Text="Show A" OnCallback="showA"/> <com:TActiveRadioButton ID="tbB" GroupName="group1" Text="Show B" OnCallback="showB"/> <com:TActivePanel ID="pnlA">foo</com:TActivePanel> <com:TActivePanel ID="pnlB">bar</com:TActivePanel> <com:TJavascriptLogger /> </com:TForm>