If you look at the screenshot below you can see that the right menu box in red has the wrong position in IE6 and 7:

<div id="doc4" class="yui-t2"> //yui-t2 = 180px on the left
  <div id="bd">
    <div id="yui-main">
      <div class="yui-b">
        <div class="yui-gc"> // yui-gc 2/3, 1/3
          <div class="yui-u first">content</div> // 2/3
          <div class="yui-u">right menu</div> // 1/3
        </div>
      </div>
    </div>
    <div class="yui-b">left menu</div> // 180px
  </div>
  <div id="ft">footer</div>
</div>

Anyone know how I can fix this problem?