> And anyway I strongly suspect that this code won't 
workwith 
> browsers like Mozilla.. as usual, a proprietary and 
> incompatible extension from Microsoft :(

You're correct, it only works in Internet Explorer... and 
that is why I mention it.  Because HTTrack is unable to find 
the image within <!--<v:imagedata blah>--> then IE will 
present a broken image while every other browser will 
display a correct image.

If you're interested, I can dig up an entire example.

I know it's stupid, and the number of pages with this 
problem on the Web would not be too high, but they are out 
there.