1diff --git a/erosion.js b/erosion.js
  2deleted file mode 100644
  3index e399ab4..0000000
  4--- a/erosion.js
  5+++ /dev/null
  6@@ -1,16 +0,0 @@
  7-self.importScripts('landmap.js');
  8-self.addEventListener('message', function(e) {
  9-  var terrain = new LandMap({
 10-    containerId: "container-5"
 11-  });
 12-  terrain.generate(0.75, "standard");
 13-  terrain.complexErosion({
 14-    carryingCapacity: 1.0,
 15-    depositionSpeed: 0.1,
 16-    iterations: 3,
 17-    drops: 2000000,
 18-    one: "standard",
 19-    two: "complexErosion-8000000-3ipd"
 20-  });
 21-  self.postMessage(terrain);
 22-}, false);
 23diff --git a/landmap.js b/landmap.js
 24index 34f9375..cd628d6 100644
 25--- a/landmap.js
 26+++ b/landmap.js
 27@@ -474,11 +474,6 @@ LandMap.prototype.complexErosion = function(options) {
 28   }
 29 };
 30 
 31-LandMap.prototype.spinner = function() {
 32-  var spinner = '<img class="spinner" width="24" height="24" src="data:image/gif;base64,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" />';
 33-  document.getElementById(this.containerId).innerHTML = spinner;
 34-}
 35-
 36 LandMap.prototype.draw = function() {
 37   var html = '<div class="row">';
 38   var featureCount = 0;
 39diff --git a/main.js b/main.js
 40index 63772b2..7397451 100644
 41--- a/main.js
 42+++ b/main.js
 43@@ -1,65 +1,52 @@
 44 var worker;
 45 $(document).ready(function() {
 46 
 47+  function spinner(id) {
 48+    
 49+  }
 50+
 51   $("#standard").click(function() {
 52-    var standardMap = new LandMap({
 53-      containerId: "container-1"
 54-    });
 55-    standardMap.generate(0.75, "standard");
 56-    standardMap.smooth(10, "standard", "smoothed-10");
 57-    standardMap.smooth(20, "standard", "smoothed-20");
 58-    standardMap.draw();
 59+    var worker = new Worker('worker.js');
 60+    worker.postMessage("standard");
 61+    worker.addEventListener('message', function(e) {
 62+      var terrain = new LandMap(e.data);
 63+      terrain.draw();
 64+    }, false);
 65   });
 66 
 67   $("#combined").click(function() {
 68-    var terrain = new LandMap({
 69-      containerId: "container-2"
 70-    });
 71-    terrain.generate(0.75, "standard");
 72-    terrain.generate(0.75, "standard-two", "DS with 0.75");
 73-    terrain.smooth(10, "standard", "standard-10");
 74-    terrain.smooth(20, "standard-two", "standard-two-20");
 75-    terrain.combine("standard", "standard-10", "standard-two-20", "combined");
 76-    terrain.combine("standard-10", "standard", "standard-two-20", "reversed");
 77-    terrain.draw();
 78+    var worker = new Worker('worker.js');
 79+    worker.postMessage("combined");
 80+    worker.addEventListener('message', function(e) {
 81+      var terrain = new LandMap(e.data);
 82+      terrain.draw();
 83+    }, false);
 84   });
 85 
 86   $("#grd").click(function() {
 87-    var terrain = new LandMap({
 88-      containerId: "container-3"
 89-    });
 90-    terrain.generate(0.75, "standard");
 91-    terrain.grd(22, 0.01, "standard", "grd-22-0.01");
 92-    terrain.grd(20, 0.03, "standard", "grd-20-0.03");
 93-    terrain.grd(40, 0.01, "standard", "grd-40-0.01");
 94-    terrain.draw();
 95+    var worker = new Worker('worker.js');
 96+    worker.postMessage("grd");
 97+    worker.addEventListener('message', function(e) {
 98+      var terrain = new LandMap(e.data);
 99+      terrain.draw();
100+    }, false);
101   });
102 
103 
104   $("#simpleErosion").click(function() {
105-    var terrain = new LandMap({
106-      containerId: "container-4"
107-    });
108-    terrain.generate(0.75, "standard");
109-    terrain.simpleErosion({
110-      carryingCapacity: 1.5,
111-      depositionSpeed: 0.03,
112-      iterations: 10,
113-      drops: 1000000,
114-      one: "standard",
115-      two: "simpleErosion"
116-    });
117-    terrain.draw();
118+    var worker = new Worker('worker.js');
119+    worker.postMessage("simpleErosion");
120+    worker.addEventListener('message', function(e) {
121+      var terrain = new LandMap(e.data);
122+      terrain.draw();
123+    }, false);
124   });
125 
126   $("#complexErosion").click(function() {
127-    var terrain;
128-    worker = new Worker('erosion.js');
129-    worker.postMessage(0);
130+    var worker = new Worker('worker.js');
131+    worker.postMessage("complexErosion");
132     worker.addEventListener('message', function(e) {
133-      console.log(e.data.maps)
134-      terrain = new LandMap(e.data);
135-      console.log(terrain.maps)
136+      var terrain = new LandMap(e.data);
137       terrain.draw();
138     }, false);
139   });
140diff --git a/worker.js b/worker.js
141new file mode 100644
142index 0000000..03a6a1b
143--- /dev/null
144+++ b/worker.js
145@@ -0,0 +1,65 @@
146+self.importScripts('landmap.js');
147+self.addEventListener('message', function(e) {
148+  var data = e.data;
149+  var terrain;
150+  switch (data) {
151+    case 'complexErosion':
152+      terrain = new LandMap({
153+        containerId: "container-5"
154+      });
155+      terrain.generate(0.75, "standard");
156+      terrain.complexErosion({
157+        carryingCapacity: 1.0,
158+        depositionSpeed: 0.1,
159+        iterations: 3,
160+        drops: 2000000,
161+        one: "standard",
162+        two: "complexErosion-8000000-3ipd"
163+      });
164+      break;
165+    case 'simpleErosion':
166+      terrain = new LandMap({
167+        containerId: "container-4"
168+      });
169+      terrain.generate(0.75, "standard");
170+      terrain.simpleErosion({
171+        carryingCapacity: 1.5,
172+        depositionSpeed: 0.03,
173+        iterations: 10,
174+        drops: 1000000,
175+        one: "standard",
176+        two: "simpleErosion"
177+      });
178+      break;
179+    case 'grd':
180+      terrain = new LandMap({
181+        containerId: "container-3"
182+      });
183+      terrain.generate(0.75, "standard");
184+      terrain.grd(22, 0.01, "standard", "grd-22-0.01");
185+      terrain.grd(20, 0.03, "standard", "grd-20-0.03");
186+      terrain.grd(40, 0.01, "standard", "grd-40-0.01");
187+      break;
188+    case 'combined':
189+      terrain = new LandMap({
190+        containerId: "container-2"
191+      });
192+      terrain.generate(0.75, "standard");
193+      terrain.generate(0.75, "standard-two", "DS with 0.75");
194+      terrain.smooth(10, "standard", "standard-10");
195+      terrain.smooth(20, "standard-two", "standard-two-20");
196+      terrain.combine("standard", "standard-10", "standard-two-20", "combined");
197+      terrain.combine("standard-10", "standard", "standard-two-20", "reversed");
198+      break;
199+    case 'standard':
200+      terrain = new LandMap({
201+        containerId: "container-1"
202+      });
203+      terrain.generate(0.75, "standard");
204+      terrain.smooth(10, "standard", "smoothed-10");
205+      terrain.smooth(20, "standard", "smoothed-20");
206+      break;
207+  };
208+  console.log(terrain)
209+  self.postMessage(terrain);
210+}, false);