Get the real width and height of an image with JavaScript? (in Safari/Chrome)

Question

I am creating a jQuery plugin.

How do I get the real image width and height with Javascript in Safari?

The following works with Firefox 3, IE7 and Opera 9:

Answer 1

Jquery has two properties called naturalWidth and naturalHeight, you can use in this way.

$('.my-img')[0].naturalWidth 
$('.my-img')[0].naturalHeight

Where my-img is a class name used to select my image.