Get real dimensions YUI

gistfile1.js

function getRealDimensions(node) {
	var	clone,
		result;

	if ( ! node ) {
		return false;
	}

	clone = node.cloneNode(true).show().setStyle('visibility','hidden').appendTo('body');

	result = {
		width: clone.get('offsetWidth'),
		height: clone.get('offsetHeight')
	};
	
	clone.remove(true);
	return result;
}