[TYPO3-english] tt_content.image.20 rollover effect

[Edgars]

 Hi, list!
 Need you advice. I have a project, where I need to achieve a rollover
 effect of tt_content images - the desaturated one, and on rollover -
 in full color. So, I saw in archive multiple messages and questions
 about GIFBUILDER rollover, and it seems like that's impossible. But
 How about generating each image twice side by side? Is it possible?
 Thanks in advance!