From 6c50fc9eb18c89de2201a0f9979b0b329d612a08 Mon Sep 17 00:00:00 2001
From: Jon Atkins <github@jonatkins.com>
Date: Tue, 11 Mar 2014 13:59:02 +0000
Subject: [PATCH] oops - can only bringToFront when a layer is acutally on the
 map - so check debug layer is enabled

---
 code/map_data_debug.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/code/map_data_debug.js b/code/map_data_debug.js
index 225d2db6..7796b809 100644
--- a/code/map_data_debug.js
+++ b/code/map_data_debug.js
@@ -29,7 +29,10 @@ window.RenderDebugTiles.prototype.create = function(id,bounds) {
   var l = L.rectangle(bounds,s);
   this.debugTileToRectangle[id] = l;
   this.debugTileLayer.addLayer(l);
-  l.bringToBack();
+  if (map.hasLayer(this.debugTileLayer)) {
+    // only bring to back if we have the debug layer turned on
+    l.bringToBack();
+  }
 }
 
 window.RenderDebugTiles.prototype.setColour = function(id,bordercol,fillcol) {