short_off = new Image();
short_off.src = "short_on.png";
short_on = new Image();
short_on.src = "short_off.png";

roadside_off = new Image();
roadside_off.src = "roadside_on.png";
roadside_on = new Image();
roadside_on.src = "roadside_off.png";

regular_off = new Image();
regular_off.src = "regular_on.png";
regular_on = new Image();
regular_on.src = "regular_off.png";

full_off = new Image();
full_off.src = "full_on.png";
full_on = new Image();
full_on.src = "full_off.png";

/*
xxx_off = new Image();
xxx_off.src = "xxx_on.png";
xxx_on = new Image();
xxx_on.src = "xxx_off.png";
*/