* [http://mxr.mozilla.org/mozilla-central/source/widget/src/windows/nsIMM32Handler.cpp#2074 Internal mouse event tracking?]* [http://mxr.mozilla.org/mozilla-central/source/widget/src/windows/nsWindow.cpp#5948 Internal mouse event tracking 2?]* [http://mxr.mozilla.org/mozilla-central/source/widget/src/windows/nsWindow.cpp#3874 Internal mouse event tracking 3?]