REQ: how I can CENTER object (panel, statictext) on pages asp.net ???

[Kasek]

REQ: how I can CENTER object (panel, statictext) on pages asp.net ???
(asp.net C#)

Which object and method return wight of www browser window.

I need set left margin and width panels, static text,etc that
these object are on center of page.

(I happy - on panel I can set CENTER object inside )

FLowLayout &i GridLayout isn't good, i can't center object
on asp.net pages.

PS. Maybe exist another think instead of set left margin and
widht in order to object center of pages.

PS. Sorry for my bad English.