WordPress mangling HTML

I’m trying to embed some flash to a page on my site, I’m entering the correct <object> & <enbed> code into the page, which displays fine.

However, If I goto edit the page at a later date the code gets mangled, wordpress inserts a </object> before the <embed> and replaces me closing /> with ></embed>

This is a real pain, as it means I have to re-edit my flash every time i alter the page.

Is there a tag to prevent wordpress altering html, or should this be reported as a bug? – I’m guessing the html tidy process doesn’t like <object> & <embed>

For reference, the page in question can be seen here:

http://davehope.co.uk/gallery/

Dave