Calculate height/width for a control

Hi,

I have a control on my aspx page, it has a Height and Width property that I want to set on Page_Load. The height and width should correspond to the browser windows size (depending on users resolution) and therefore the control should fill the entire browser window (without the scroll bars appearing when the browser is maximised). How can I calculate the height and width for this control? There should be no whitespace on the page, just the whole control filling the page.

Thank you very much for any help.