Hiding Executable Javascript In Images That Pass Validation. 18 Comments . by: Mike Szczys. ... What if you are working on a computer that doesn’t allow the browser to load Javascript.

That is, the x.src = "foo.gif" setting, doesn't halt the browser, until the image fully loaded.<br><br>You will either have to preload ALL the images, or use a timeout, and check back, once in a ...