How to detect that the same page is already opened in another window in IE

Posted by HeavyWave on Stack Overflow See other posts from Stack Overflow or by HeavyWave
Published on 2010-04-14T23:45:55Z Indexed on 2010/04/14 23:53 UTC
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Is there any way to check that my page is not opened in another tab or window in IE? Say I have Page1 and user hits "new window", which will open a new window with the same page opened. So now there are two instances of the page. I want to restrict the browser to only have one instance of the page opened at any given time.

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