// installation:
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
<script type="text/javascript" src="path-to-file/jquery.actual.js"></script>
// examples:
// get hidden element actual width
$( '.hidden' ).actual( 'width' );
// get hidden element actual innerWidth
$( '.hidden' ).actual( 'innerWidth' );
// get hidden element actual outerWidth
$( '.hidden' ).actual( 'outerWidth' );
// get hidden element actual outerWidth and set the `includeMargin` argument
$( '.hidden' ).actual( 'outerWidth', { includeMargin : true });
// get hidden element actual height
$( '.hidden' ).actual( 'height' );
// get hidden element actual innerHeight
$( '.hidden' ).actual( 'innerHeight' );
// get hidden element actual outerHeight
$( '.hidden' ).actual( 'outerHeight' );
// get hidden element actual outerHeight and set the `includeMargin` argument
$( '.hidden' ).actual( 'outerHeight', { includeMargin : true });
// if the page jumps or blinks, pass a attribute '{ absolute : true }'
// be very careful, you might get a wrong result depends on how you makrup your html and css
$( '.hidden' ).actual( 'height', { absolute : true });
// if you use css3pie with a float element
// for example a rounded corner navigation menu you can also try to pass a attribute '{ clone : true }'
// please see demo/css3pie in action
$( '.hidden' ).actual( 'width', { clone : true });
// if it is not a block element. By default { display: 'block' }.
// for example a inline element
$( '.hidden' ).actual( 'width', { display: 'inline-block' });