In this new version I replaced the Layer Switcher (under the + on the right side of the map) by a toolbox (one of the icons under the OpenStreetBrowser-logo). I hope it's easier that way. I also have some more ideas for improvements (like tooltip-information about the layers or an option for adding additional layers). If you still want the old layer switcher, you can activate it via the 'Debug Toolbox' (activate it in the Options). There were also some bugfixes and the usual translation updates (esp. French and Greek - thanks to all contributors).