You can't really. One way to do something like this is to use JavaScript to set a hidden field on a login page or some such that pushes that ingo bhack to your CGI. the issue is that a user can change his window size anytime. Why not just write HTML that looks good no matter what size the window is?

-Waswas

In reply to Re: Resolution by waswas-fng
in thread Detecting web clients monitor resolution without javascript by Anonymous Monk

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