diff -r d33f0b00f8d9 -r cfde0597a8dc script.js
--- a/script.js	Sat Jun 19 00:12:34 2010 +0200
+++ b/script.js	Sun Jul 04 00:11:17 2010 +0200
@@ -137,3 +137,105 @@
 	//document.write(request.responseText);
     document.getElementById('footer').innerHTML = request.responseText;
 }
+
+// Mandelbrot functions
+function Complex(real, imag) 
+{
+	this.real = real;
+	this.imag = imag;
+}
+
+var MIN_C = new Complex(-2.2, -1.4);
+var MAX_C = new Complex(1.0, 1.4);
+var min_c = MIN_C;
+var max_c = MAX_C;
+var max_iter = 100;
+var zoom = 0.1;
+
+function Result(z, iter) 
+{
+	this.z = z;
+	this.iter = iter;
+}
+
+function complex_quad(c)
+{
+	return new Complex(Math.pow(c.real, 2) - Math.pow(c.imag, 2), 
+		2.0 * c.real * c.imag);
+}
+
+function complex_quad_value(c)
+{
+	return Math.pow(c.real, 2) + Math.pow(c.imag, 2);
+}
+
+function complex_add(c1, c2)
+{
+	return new Complex(c1.real + c2.real, c1.imag + c2.imag);
+}
+
+function iterate(z, c) 
+{
+	z_quad = complex_quad(z);
+	return new Complex(z_quad.real + c.real, z_quad.imag + c.imag);
+}
+
+function test(c, max_iter) 
+{
+	var iter = 0;
+	var z = new Complex(0.0, 0.0);
+	while (complex_quad_value(z) <= 4.0
+		&& iter < max_iter)
+	{
+		z = iterate(z, c);
+		iter++;
+	}
+	return new Result(z, iter);
+}
+
+function draw(iter, x, y, z)
+{  
+	var canvas = document.getElementById('mandelbrot');  
+	if (canvas.getContext)
+	{  
+		var ctx = canvas.getContext('2d'); 
+		zoom += z / 10.0;
+		x = x / 30.0 / zoom;
+		y = y / 30.0 / zoom;
+		var min_inc = new Complex(x + zoom, y + zoom);
+		var max_inc = new Complex(x - zoom, y - zoom);
+		min_c = complex_add(min_c, min_inc);
+		max_c = complex_add(max_c, max_inc);
+		max_iter += iter;
+		var diff_c = new Complex(max_c.real - min_c.real,
+			max_c.imag - min_c.imag);
+		var width = canvas.width;
+		var height = canvas.height;
+		var dim = Math.max(width, height);
+		ctx.clearRect(0, 0, width, height);
+		
+		for (var y = 0; y < height; y++) 
+		{
+			for (var x = 0; x < width; x++) 
+			{        					
+				if (true) 
+				{
+					var c = new Complex(min_c.real + diff_c.real 
+						/ dim * x, 
+						min_c.imag + diff_c.imag / dim * y);  	
+				 	var result = test(c, max_iter);
+				 	
+				 	if (result.iter < max_iter) 
+				 	{
+				 		var r = result.iter * 3;
+				 		var g = result.iter * 3;
+				 		var b = result.iter * 3; 
+				 		var colour = r + "," + g + "," + b;
+				 		ctx.fillStyle = "rgb(" + colour + ")"; 
+						ctx.fillRect(x, y, 1, 1);
+					}
+				}  
+			}
+  		}
+	}  
+}