I've given you the solution to that in my demo.:) If you substitute the image I used for the image of your globe you will see it scale up and down in all its glory:) You just need to duplicate that section of code exactly as it is all needed to create that effect. This is the section of relevant code but you need to look at it in the context of the demo to see the effect. Just open and close the webpage to see how it adjusts.
My other majot problem is that I cannot get the globe to reduce in size to the size of the screen without setting width and height, but if I do, then it will not fit different devices, I expect.