^ if you grab the .jpg from the website's code, your browser doesn't scale it at all so you'll get the best resolution, and the full image will be the same size as next time you grab one for easy comparison. Manually cropping screenshots I would always end up with different-sized images.
Screenshot from today, steel is now visible

(click for full size)
http://brookfieldplacecalgary.com/webcam.html
They really need to wash the windows up in Suncor...