diff -r 31c7acfbf85c -r adbea491e9b9 script.js
--- a/script.js	Tue Jul 06 00:22:27 2010 +0200
+++ b/script.js	Tue Jul 06 11:56:48 2010 +0200
@@ -138,6 +138,8 @@
     document.getElementById('footer').innerHTML = request.responseText;
 }
 
+
+
 // Mandelbrot functions
 function Complex(real, imag) 
 {
@@ -149,7 +151,8 @@
 var MAX_C = new Complex(1.0, 1.4);
 var min_c = MIN_C;
 var max_c = MAX_C;
-var max_iter = 100;
+var MIN_ITER = 100;
+var max_iter = MIN_ITER;
 var zoom = 1.0;
 var resolution = 3;
 var bailout = 4.0;
@@ -206,7 +209,7 @@
 	return new Result(quad_z, iter);
 }
 
-function draw(iter, dx, dy, dz, dres)
+function draw(diter, dx, dy, dz, dres)
 {  
 	var canvas = document.getElementById('mandelbrot'); 
 	
@@ -219,7 +222,14 @@
 		{		
 			resolution = Math.max(1, resolution + dres);
 		}
+
+		if (diter != 0)
+		{
+			max_iter = Math.max(MIN_ITER, max_iter + diter);
+		}
 		
+		var red = "rgb(255, 0, 0)";
+		var white = "rgb(255, 255, 255)";
 		var width = canvas.width;
 		var height = canvas.height;
 		var dim = Math.max(width, height);
@@ -236,11 +246,10 @@
 		var max_inc = new Complex(dx_max * dim_ratio / 2.0, dy_max);
 		min_c = complex_add(min_c, min_inc);
 		max_c = complex_add(max_c, max_inc);
-		max_iter += iter;
 		diff_c = new Complex(max_c.real - min_c.real,
 			max_c.imag - min_c.imag);
 		
-		for (var y = 0; y < height; y += resolution) 
+		for (var y = 0; y < height - 2; y += resolution) 
 		{
 			for (var x = 0; x < width; x += resolution) 
 			{    			
@@ -255,7 +264,7 @@
 					(result.iter - max_iter / 20.0)), 2));
 		 		var colour = r + "," + g + "," + b;
 		 		ctx.fillStyle = "rgb(" + colour + ")"; 
-				ctx.fillRect(x, y, resolution, resolution);				 
+				ctx.fillRect(x, y, resolution, resolution);			
 			}
   		}
 	}