function Rectangle(x, y, width, height) {
	this.x = x;
	this.y = y;
	this.width = width;
	this.height = height;
}

Rectangle.prototype.contains = function(x, y) {
	return (this.x <= x &&
	        x < this.x+this.width) &&
	       (this.y <= y &&
	        y < this.y+this.height);
};