openstreetmap/openstreetmap-website — pull request #53 by lonvia (2012-07-14 15:29:45+00:00)
Title: Replace PanZoom control with Zoom control for small maps

The event handling of PanZoom and PanZoomBar clashes in OL 2.12. The result is that the zoom level changes by two steps every time the +/- buttons on the zoom controls are pressed. Using the Zoom control fixes this issue.

As an added bonus, the Zoom control is marginally more user-friendly on touchscreens (and would resolve issue #44).