var Circle = function()
{
	this.x = 0;
	this.y = 0;
	this.radius = 0;
	
	this.setRadius = function(r) { this.radius = r; }
	this.setCoords = function(x,y) {
		this.x = x; 
		this.y = y; 
	}
	
	this.report = function()
	{
		alert("I am a Circle with a radius of " + this.radius + " and which sits at co-ordinates " + this.x + ", " + this.y + ".");
	}
}
var Rectangle = function()
{
	this.x1 = 0;
	this.y1 = 0;
	this.x2 = 0;
	this.y2 = 0;

	this.setCoords = function(x1,y1,x2,y2) {
		this.x1 = x1; 
		this.y1 = y1; 
		this.x2 = x2; 
		this.y2 = y2; 
	}
	
	this.report = function()
	{
		alert("I am a Rectangle which sits at co-ordinates (" + this.x1 + ", " + this.y1 + ") are (" + this.x2 + ", " + this.y2 + ").");
	}
}

var rectangle1 = new Rectangle();
rectangle1.setCoords(0,0,30,40);

var circle1 = new Circle();
circle1.setRadius(9);
circle1.setCoords(30,30);