function backgrounds_parallax()
{
    var _v = argument[0];
    for (var _i = 1; _i < argument_count; _i++)
    {
        var _b = argument[_i];
        __background_set(e__BG.X, _b, (__view_get(e__VW.XView, _v) / (room_width - __view_get(e__VW.WView, _v))) * (room_width - __background_get(UnknownEnum.Value_5, _b)));
        __background_set(e__BG.Y, _b, (__view_get(e__VW.YView, _v) / (room_height - __view_get(e__VW.HView, _v))) * (room_height - __background_get(UnknownEnum.Value_6, _b)));
    }
}

enum UnknownEnum
{
    Value_0,
    Value_1,
    Value_2,
    Value_3,
    Value_4,
    Value_5,
    Value_6
}

enum e__VW
{
    XView,
    YView,
    WView,
    HView,
    Angle,
    HBorder,
    VBorder,
    HSpeed,
    VSpeed,
    Object,
    Visible,
    XPort,
    YPort,
    WPort,
    HPort,
    Camera,
    SurfaceID
}

enum e__BG
{
    Visible,
    Foreground,
    Index,
    X,
    Y,
    Width,
    Height,
    HTiled,
    VTiled,
    XScale,
    YScale,
    HSpeed,
    VSpeed,
    Blend,
    Alpha
}