AJAX is an overkill for this. Browser side scripting is much more elegant and effective solution.
On the server side you just replace all img tags with a script tag that creates the images when they come visible. It would be quite easy to write a wrapper plugin (like the te access control thing that I wrote) and make this replace the tags.
See
www.cryer.co.uk/resources/javascript/script3.htm
mikko
Post edited by: mikko, at: 2006/07/20 21:10