How do I resize an iFrame to fit the content of the source page?

I would like to resize an iFrame to fit the content of the source page.  I am currently using the following code but it does not always work:

<script language="JavaScript">
function calcHeight()
  //find the height of the internal page
  var the_height=

  //change the height of the iframe

<iframe name="the_iframe" onLoad="calcHeight();" scrolling="no" width="830"  id="the_iframe" src="" frameborder="0" allowtransparency="true"></iframe>

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There's a typo in your code:
Should be:

Your actually adapting the style so add the .style, tested and it works.

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