Methods jQuery.fn.scrollLeft and jQuery.fn.scrollTop are slow for window

[mdevils]

If page is not scrolled, the expression will go through all the variants:

this[0] == window || this[0] == document ?
                    self[ i ? 'pageYOffset' : 'pageXOffset' ]
                    ||   jQuery.boxModel && document.documentElement[ method ] ||
					    document.body[ method ]) :
				this[0][ method ];

If window.pageYOffset or window.pageXOffset are defined, they should be returned for window.

[brandon]

Thanks for catching this mdevils. :) Fixed in r6451