The Breasts Equation

This equation is making the rounds this week. However, it doesn't work on IE as of yet.

Google: `e^{-\frac{((x-4)^2+(y-4)^2)^2}{999}}+e^{-\frac{((x+4)^2+(y+4)^2)^2}{999}}+0.1\timese^{-((x+4)^2+(y+4)^2)^2}+0.1\timese^{-((x-4)^2+(y-4)^2)^2}`