0.1.6: The maps looks really nice, when I try to scroll using mouse wheel i

0.1.6: The maps looks really nice, when I try to scroll using mouse wheel it will prompt a message “Use ⌘ + scrool to zoom the map”; in Firefox, the map actually dims and the message appears large in the middle with white font. However, the rest 3 browsers show the message with black font in top left, which is not that easy to notice. Also sometimes in the map, random pinpoints show up for 1 - 2 sec, I don’t know what those stand for and why those appear.