The Two div Trick

From Chapter 1: Natural Search Engine Optimization

This code requires a FlashObject class, available at http://code.google.com/p/swfobject/.

<div id="flashcontent">
    This is replaced by the Flash content if the user has the correct
    version of the Flash plug-in installed.
    Place your HTML content in here and Google will index it just as
    it would normal HTML content (because it is HTML content!)
    Use HTML, embed images, anything you would normally place on an
    HTML page is fine.
</div>
<script type="text/javascript">
// <![CDATA[
    var fo = new FlashObject("flashmovie.swf", " flashmovie", "00", "300",
    "8", "#FF6600");
    fo.write("flashcontent");
// ]]>
</script>