[Solved] Can anyone advise me on what this JavaScript code does?

Question

The use of parent.Bottom is indicative that an iframe named “Bottom” exists within the page.

Based on that, you can assume that the method changeDiv() is setting this iframe’s content to Intro.asp, and that proceed() is submitting a form called frmChange within that iframe.

I would also add that the MM_ methods are not directly related to the changeDive() and proceed() method since I don’t see any calls to either set of methods. The MM_ set of methods definitely look like image preloaders and swappers, but doesn’t quite make sense why they would exist in a “login” page.

Accepted Answer

The use of parent.Bottom is indicative that an iframe named “Bottom” exists within the page.

Based on that, you can assume that the method changeDiv() is setting this iframe’s content to Intro.asp, and that proceed() is submitting a form called frmChange within that iframe.

I would also add that the MM_ methods are not directly related to the changeDive() and proceed() method since I don’t see any calls to either set of methods. The MM_ set of methods definitely look like image preloaders and swappers, but doesn’t quite make sense why they would exist in a “login” page.