Untitled

<div id="container">
  <div id="menu" style="float: left; margin-left: 10px; margin-top: 10px">
    het menu
  </div>
  <div id="main" style="float: right; margin-right: 10px">
    main
  </div>
  <div class="clear" style="clear: both"></div>
</div>