Per jQuery’s documentation, there are a number of caveats for using the load event with images. As noted in another answer, the ahpi.imgload.js plugin is broken, but the linked Paul Irish gist is no longer maintained.
Per Paul Irish, the canonical plugin for detecting image load complete events is now at:
https://github.com/desandro/imagesloaded
https://github.com/alexanderdickson/waitForImages
http://stackoverflow.com/questions/910727/jquery-event-for-images-loaded