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I've tried using onblur for my problem, but that only is if the focus changes from one textbox to another or something similar. I am writing a webpage for an embedded browser that has several issues. When the browser is hidden a gif is not being hidden, and seems like it stays in cache. My thinking is perhaps there is a way to invoke the browser to hide the gif as the focus is lost. Focus in this case would be similar to a user clicking on another window. This seems like it is out of the scope of web technologies, but I thought I'd ask.

Thanks!

epascarello
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Dave
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    Check this [link](http://stackoverflow.com/questions/1060008/is-there-a-way-to-detect-if-a-browser-window-is-not-currently-active). Hope it helps. – Fahim Parkar May 11 '12 at 16:39
  • You don't. Certain things have been disallowed for privacy reasons. – Joshua Dec 22 '15 at 00:23

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