Address bar code location

Hi,

I wanted to know the modules workflow while I am changing any company from the "Address Bar" as shown in below image:

I think it is related to "SysTaskRecorder_AddressbarEvents" class. but i am not able to trace this event. Actually i wanted to put my code below the setDefaultCompany() called from address bar.

Can anyone give me the steps (module wise) called when click on address bar to change company.

Thanks in advance.

Regards,

/Ashlesh