Finding Frame & Window Sizes

[Anon]

I would like to resize an image based on the size of the browser.
Java applets can get the size of the applet window, but is there a comparable function in php?
I'm assuming that because PHP is executed on the server, it knows nothing of the client, but maybe there is a way to supply PHP with the window size from your browser.

-Ray

[synapse0]

javascript..
you can obtain the info from a page, have js fill in variables with the sizes, and you can obtain the variables from the next page...