html，css，从gif文件执行javascript

Question

I would like to know if it's possible to execute javascript from embedded .gif file . I can make rewrite to a php file to seem as a gif file and execute the code from there but I'm not faimilar with css/html therefore I was wondering if there is any trick to make seem there is embedded a picture but to execute javascript . I tried img src attribute but is not working as the browser seems to consider it just a simple picture...

Answer 1

GIF compression is lossy and is not suitable for code. However, the javascript hacker Jacob Seidelin implemented something very similar using pngs: http://blog.nihilogic.dk/2008/05/compression-using-canvas-and-png.html