We received a comment on a post recently that lead us to this site which we thought you might be interested in. 22Surveys is a site in Amsterdam run by Dennis Sewberath. Dennis has been a Survey Developer and Designer and has been creating and designing surveys for many years and loves to share his ideas and opinions. He tries to use only open source and free software and code to show you his ideas and examples for online surveys.
His latest post was on clickable images using CSS for Data Collection and we think its worth a look.