I would not recommend even trying to change a browser's default behavior in such a way as it's never the best way. The very fact you wish to do this highlights to me that there is most likely some flaw in your application you are trying to work round.

So whether it's flash, frames or whatever I am sure there is a better way...
Maybe you could be more specific about your application and why this function is required and perhaps we can show you an alternive method that isnt likely to annoy visitors.

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