When I run into a website that breaks my experience, it slows down my computer, crashes the browser and takes away the comment I was about to write. No, thanks.
So then we're back to the previous comment: what does IE have anything to do with this? If your browser crashes because of a misbehaving script... I'm not saying you're using IE, but you're surely not using a browser that fits your needs. Chrome simply crashes the tab, and Firefox hangs for a few seconds until it asks if you want to stop the script.
What you're looking for is browser sandboxing, and it exists.