diff --git a/mods/fill_script.js b/mods/fill_script.js
new file mode 100644
index 00000000..20247eaf
--- /dev/null
+++ b/mods/fill_script.js
@@ -0,0 +1,42 @@
+function FillTool(x,y)
+{
+    if (!isEmpty(x,y))
+    {
+        oldElement = pixelMap[x][y].element;
+    }
+    else
+    {
+        oldElement = undefined;
+    }
+    
+    Fill(x, y, oldElement);
+}
+
+function Fill(x, y, oldElement) 
+{
+    if (x < 0 || x >= width || y < 0 || y >= height) return;
+    
+    if (pixelMap[x][y] !== undefined && oldElement !== undefined)
+    {
+        if (pixelMap[x][y].element != oldElement) return;
+    }
+    else
+    {
+        if (pixelMap[x][y] != oldElement) return;
+    }
+    
+
+    var index = currentPixels.indexOf(pixelMap[x][y]);
+    if (index > -1) 
+    {
+        currentPixels.splice(index, 1);
+    }
+    currentPixels.push(new Pixel(x, y, currentElement));
+    
+    Fill(x + 1, y, oldElement);
+    Fill(x - 1, y, oldElement);
+    Fill(x, y + 1, oldElement);
+    Fill(x, y - 1, oldElement);
+}
+
+// Example: Fill(10, 10, pixelMap[10][10].element);
\ No newline at end of file