     e.preventDefault()
     Greenhorn.isDown[e.keyCode] = false
     return
-document.onmousemove = (e) ->
-    @mouseX = e.pageX
-    @mouseY = e.pageY
-    return
 
 #integer ID used to start and stop _masterUpdate
 _masterID = null

            -@get('canvas', 'height') / 2,
            @get('canvas', 'width'),
            @get('canvas', 'height'))
    @hide = ->
        @set 'main', 'style', {'display': 'none'}
    @show = ->


    #start all asynchronous functions
    _startEverything = ->
        Sprites._startAll()
        Sounds._playAll()
        _masterID = setInterval _masterUpdate, 1000 / env.FRAME_RATE
        return

    #used to keep engine from
