It doesn't work, I can and have bypassed all such codes inside of a few seconds. The code runs once only until you reset the alert box. So leave the box open then click again, the alert fails. That's assuming enter+click together didn't break it first time anyway.

Bottom line, you cannot protect pages this way, all elements are cached by the browser, so can be taken from there. You turn off caching, I'll bring in my tiny DOS downloader and steal the piccys that way, and unless you used server side code to stop it by naming my program, it will bypass anything you used to block with. If you did manage to block that, I'd do a screen dump then work with it to crop out the images, which you can never stop.

The general rule is, if you don't want it taking, don't put it up there.

safeTsurfa
Stay alert! Stay safe! Stay alive!