Where is the .JS file in this code? And why are they calling it this way?

Question

Where is the JS file and is this Async the fastest way to call JS?

I guess they then have PHP calls in the .JS for updating the Ad stats??

The code:

Answer 1

I've made your code more readable:

1 

• 2,14 An anonymous function wrapper is created, so that variables cannot be access from outside the function ("scope")
• 3   acc looks like the identifier of the advertiser
• 4,5 st = "nocss" and or = "h" looks like settings to adjust the appearance
• 7,10-12 A