title: height=100% do not work
body: <p>the code below are all height=100%, it works fine in chrome but it displayes very strange in firefox and ie7!it is not exactly the 100% height.anyone knows? thanks a million.</p>
  
  <pre><code>&lt;iframe src ="demoFramesetLeftFrame.jsp" name="treeframe" id="treeframe" 
          width=200px height=100% frameborder=0&gt;
  &lt;/iframe&gt;
   &lt;iframe src="middle.html" name="middle" id="middle"
          width=200px height=100% frameborder=0&gt;
  &lt;/iframe&gt;
  &lt;iframe src="test.html" name="basefrm" id="basefrm"
          width=200px height=100% frameborder=0&gt;
  &lt;/iframe&gt;
  </code></pre>