right_on = new Image(375,275)
right_on.src = "_images/right_on.gif"
right_off = new Image(375,275)
right_off.src = "_images/right_off.gif"
left_on = new Image(375,275)
left_on.src = "_images/left_on.gif"
left_off = new Image(375,275)
left_off.src = "_images/left_off.gif"