SyntaxError: missing ) after formal parameters

function CircleCoordinates(CircleOptions) {
    var left = CircleOptions.posBall.x - CircleOptions.radius,
    top = CircleOptions.posBall.y + CircleOptions.radius,
    right = CircleOptions.posBall.x + CircleOptions.radius,
    bottom = CircleOptions.posBall.y - CircleOptions.radius;
}