viewport is a small jquery plugin writen by @waxzce with the Andy Langton script found here : http://andylangton.co.uk/articles/javascript/get-viewport-size-javascript/

It's usefull when you have to know dimension of the usable browser window build to answer this : how to get width and heigth of the navigator ?

use as yout want

how to :

$().getViewport().width $().getViewport().height