Something like this should work:
PHP:
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0" width="550" height="400" id="show" align="middle">
<param name="allowScriptAccess" value="sameDomain" />
<param name="movie" value="/path/to/show.swf" />
<param name="quality" value="high" />
<param name="bgcolor" value="#ffffff" />
<embed src="/path/to/show.swf" quality="high" bgcolor="#ffffff" width="550" height="400" name="show" align="middle" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />
</object>
I don't think it'll
validate, but other than that it
should work...
You need
both the object and embed to make it work in both IE and Firefox, and it may like the whole path (ie. url) to the file better than just a relative path, but just try it out...
Not sure you need all the param(eter)s either, try deleting some and see what happens...
Edit: If you want it to validate under xhtml 1.1, you may have to sacrifice the check and use something like:
PHP:
<object type="application/x-shockwave-flash" data="/path/to/file.swf" width="130" height="60">
<param name="movie" value="/path/to/file.swf" />
<img src="/path/to/alternative.gif" width="130" height="60" alt="whatever" />
</object>
But then you can have alternative code (where I've put the image) for those who don't hav flash or don't want flash contents showing (like me, who uses Safari with plug-in support disable and Adblock with Firefox).
Enjoy...