diff --git a/www/external/TileLayer.Grayscale.js b/www/external/TileLayer.Grayscale.js
deleted file mode 100644
index 1dae67c..0000000
--- a/www/external/TileLayer.Grayscale.js
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * L.TileLayer.Grayscale is a regular tilelayer with grayscale makeover.
- */
-
-L.TileLayer.Grayscale = L.TileLayer.extend({
- options: {
- quotaRed: 21,
- quotaGreen: 71,
- quotaBlue: 8,
- quotaDividerTune: 0,
- quotaDivider: function() {
- return this.quotaRed + this.quotaGreen + this.quotaBlue + this.quotaDividerTune;
- }
- },
-
- initialize: function (url, options) {
- options = options || {}
- options.crossOrigin = true;
- L.TileLayer.prototype.initialize.call(this, url, options);
-
- this.on('tileload', function(e) {
- this._makeGrayscale(e.tile);
- });
- },
-
- _createTile: function () {
- var tile = L.TileLayer.prototype._createTile.call(this);
- tile.crossOrigin = "Anonymous";
- return tile;
- },
-
- _makeGrayscale: function (img) {
- if (img.getAttribute('data-grayscaled'))
- return;
-
- img.crossOrigin = '';
- var canvas = document.createElement("canvas");
- canvas.width = img.width;
- canvas.height = img.height;
- var ctx = canvas.getContext("2d");
- ctx.drawImage(img, 0, 0);
-
- var imgd = ctx.getImageData(0, 0, canvas.width, canvas.height);
- var pix = imgd.data;
- for (var i = 0, n = pix.length; i < n; i += 4) {
- pix[i] = pix[i + 1] = pix[i + 2] = (this.options.quotaRed * pix[i] + this.options.quotaGreen * pix[i + 1] + this.options.quotaBlue * pix[i + 2]) / this.options.quotaDivider();
- }
- ctx.putImageData(imgd, 0, 0);
- img.setAttribute('data-grayscaled', true);
- img.src = canvas.toDataURL();
- }
-});
-
-L.tileLayer.grayscale = function (url, options) {
- return new L.TileLayer.Grayscale(url, options);
-};
diff --git a/www/index.html.de b/www/index.html.de
index b433605..eb7c421 100755
--- a/www/index.html.de
+++ b/www/index.html.de
@@ -33,7 +33,6 @@
-
diff --git a/www/index.html.en b/www/index.html.en
index 7ea1596..a426b51 100755
--- a/www/index.html.en
+++ b/www/index.html.en
@@ -33,7 +33,6 @@
-