I put this is my HTML view:

 

<embed src="http://w198.photobucket.com/pbwidget.swf?pbwurl=http://w198.photobucket.com/albums/aa2/elonhillel/59842ef9.pbw" width="550" height="360" type="application/x-shockwave-flash" wmode="transparent"></ embed>

 

I switch back to Normal view.  I switch back to HTML view, and my code has changed to:

 

<embed src="http://w198.photobucket.com/pbwidget.swf?pbwurl=http://w198.photobucket.com/albums/aa2/elonhillel/59842ef9.pbw" width="550" height="360" type="application/x-shockwave-flash" wmode="transparent">

 

The </embed> tag at the end of the line goes missing.  Upon saving, this causes the page to fail xhtml validation, which is a requirement for my project.  Thanks for your help in figuring this out!