You can disable the Google Maps scrolling in DJ-Classifieds Google Maps module and component.
Check video explaining how it works:
Open Google Maps module and change the Mouse zoom scrolling settings to "No" (1)
Save the module (2)
Advert's details page
Open DJ-Classifieds component and go to Options
In Global tab scroll down to Scroll wheel zooming and set it to "No" (1)
Save settings (2)
Now the map won't be scrolling when the cursor is over it.