SWF thumbnail on the detail page

[sachlavim]

I would like to see the flash (.swf) thumbnail on the detail page and after clicking on it the flash (.swf) will start.
I change thst template/media/swf.html
from:

Code: [Select]

src="{media_src}"to

Code: [Select]

img src="./data/thumbnails/{cat_id}/{thumbnail_file_name}"
but now the thumbnail changes randomly.
do you have an idea to solve it ?