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Alex Rivera
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I have a page where we're positioning a bunch of elements using CSS, and changing their "top and left" positions using JS. I've had reports that these things have been misaligned, but a user has the motive to lie about this to "cheat", so I'm not exactly sure whether they're telling the truth. I'm trying to find a way to figure out whether they're lying or not, and to have some "proof". I know that Canvas has a method to copy image information from an image element, or another canvas element (kind of a BitBlt operation). Would it be possible to somehow, with Canvas (or with something else, Flash, whatever), take a "picture" of a piece of the page? Again, I'm not trying to take information from an <image> . I'm trying to copy what the user sees, which is comprised of several HTML elements positioned absolutely (and I care most about those positions) and somehow upload that to the server. I understand this can't be done, but maybe I'm missing something. Any ideas?
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