<div id="mycontrol">
  <com:TActivePanel ID="pnlHeader" ActiveControl.EnableUpdate="false">
  <h2><com:TLabel ID="Heading" Text="Title"/></h2>
  </com:TActivePanel>
  <com:TActivePanel ID="pnlContents" ActiveControl.EnableUpdate="false">
   This is just some text.<br/>
   This is just some text.<br/>   
  </com:TActivePanel>
</div>