TinyMCE is modifying the XHTML 1.0 Strict HTML I input. How can I stop it?

Posted by Matt on Stack Overflow See other posts from Stack Overflow or by Matt
Published on 2010-04-22T09:09:29Z Indexed on 2010/04/22 9:13 UTC
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web-development

The code I want to have saved through TinyMCE is as follows:

<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="550" height="90" id="homepage-banner">
    <param name="movie" value="/images/header.swf" />
    <param name="wmode" value="transparent" />
    <!--[if !IE]>-->
        <object type="application/x-shockwave-flash" data="/images/header.swf" width="550" height="90">
            <param name="wmode" value="transparent" />
    <!--<![endif]-->
            <img src="/images/header.jpg" width="550" height="90" alt="" border="0" />
    <!--[if !IE]>-->
        </object>
    <!--<![endif]-->
</object>

Sadly, what I end up with is:

<object data="/images/header.swf" height="90" type="application/x-shockwave-flash" width="550">
    <param name="id" value="homepage-banner" />
    <param name="wmode" value="transparent" />                
    <param name="src" value="/images/header.swf" />               
</object>

The purpose of the stripped parts of the code is to provide a fallback image if flash is not available on the client.

In my tinyMCE.init({ ... }); I am using verify_html: true and valid_elements is set as per this forum topic whereby all valid XHTML 1.0 Strict elements are allowed. I have checked and the above code does comply with the XHTML 1.0 Strict standard.

I have tried just setting verify_html to false but it had no effect. How can TinyMCE be configured to leave my HTML alone?!

Developer IT