I just released Dimensions 1.1. It includes an option to include margin for the outerWidth and outerHeight methods. I've also fixed the issues with Safari 3 and the offset method. The docs have also been udpated for 1.1. As usual you can grab the latest from the Dimensions project page. Note that this update requires jQuery 1.1.3.
project page: http://jquery.com/plugins/project/dimensions/ docs: http://brandonaaron.net/docs/dimensions/ -- Brandon Aaron