Google prettify stops working when my JS file has a Object.prototype.myFunction = function(....
I.e. when I have at least one new function defined inside the Object.prototype, It prevents prettify to show code on my web-page.
Even though, I don't try to show that javasript file inside prettify code viewer. I just use that js-file as a lib. 
I wonder why.. and how to avoid this? There is No any error in the browser when it happens
