<div id="content">
  <div id="rightColumn"></div>
  <div id="mainContent">
    <div id="centerColumn">
       <asp:ContentPlaceHolder ID="MainContent" runat="server"></asp:ContentPlaceHolder>
    </div>
  </div>
  <div id="leftColumn">
<!-- Our menu will go here -->       
  </div>
  <div class="clear"></div>
</div>