Getting the width and height of the document now returns the correct value in...

Getting the width and height of the document now returns the correct value in all browsers. It even works around the scrollWidth == offsetWidth bug in Firefox thanks to wizzud.

src/core.js

@@ -1311,8 +1311,11 @@ jQuery.each([ "Height", "Width" ], function(i, name){
 		
 			// Get document width or height
 			this[0] == document ?
-				// Either scroll[Width/Height] or offset[Width/Height], whichever is greater (Mozilla reports scrollWidth the same as offsetWidth)
-				Math.max( document.body[ "scroll" + name ], document.body[ "offset" + name ] ) :
+				// Either scroll[Width/Height] or offset[Width/Height], whichever is greater
+				Math.max( 
+					Math.max(document.body["scroll" + name], document.documentElement["scroll" + name]), 
+					Math.max(document.body["offset" + name], document.documentElement["offset" + name]) 
+				) :
 
 				// Get or set width or height on the element
 				size == undefined ?