From 756888cee7f2377b02e229de667d2a8cf5b71ab3 Mon Sep 17 00:00:00 2001
From: kerryarts <karts41@gmail.com>
Date: Thu, 20 Nov 2014 17:11:02 +1300
Subject: [PATCH] default zIndex to be a valid value to fix exception in ie8

---
 src/layer/tile/GridLayer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/layer/tile/GridLayer.js b/src/layer/tile/GridLayer.js
index 9d102efa..041b6ab1 100644
--- a/src/layer/tile/GridLayer.js
+++ b/src/layer/tile/GridLayer.js
@@ -15,7 +15,7 @@ L.GridLayer = L.Layer.extend({
 		updateInterval: 200,
 
 		attribution: null,
-		zIndex: null,
+		zIndex: 'auto',
 		bounds: null,
 
 		minZoom: 0