Access images used in browser themes?

Is it possible for a website 开发者_StackOverflow社区to call images that are used in browser themes or plugins?

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No, there's no standard way of doing this.

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It would be a security bug.

Only way to do this would be by knowing the path to user's firefox profile dir. You could link to those files with and use onload to find out if they exist.

But You would have to get user to give You the path and You'd probably ewncounter cross-domain issues.