根据页面的内容，动态设置iframe的高度使其不出现滚动条

<iframe id="treeFrame" name="treeFrame" frameborder="0" scrolling="0" width="100%" src="Tree.jsp">
<iframe id="contentFrame" name="contentFrame" frameborder="0" scrolling="0" width="100%" src="content.jsp" stype="height:expression(1);aho:expression(autoResize())">
<script type="text/javascript">
function autoResize()
{
   try{
      var hr = contentFrame.document.body.scrollHeight;
      var hl = treeFrame.document.body.scrollHeight;
      var height = Math.max(hr,hl);
      document.all["contentFrame"].style.height = height;
      document.all["treeFrame"].style.height = height;
   }
   catch(e){}
}
 
</script>