how do i determine a users screen size in JS or jquery

[buzzlightweight]

Is there a way to determine a users screen size using js or jquery?

im planning my friends new website so no code writen yet but as a bit of background i will be building him a site for his photography.

when the page first loads i want my js or jquery to determine the users screen size and sutably size an image for the background, so if the user has a 22" screen it will fill the whole window or if they resize the window slightly it will manipulte the image to fit.

i hope that made sense, many thanks

 

[visibleman]

Have a look at http://api.jquery.com/width (and obviously the .height function).