From 3310101620c0dd430cfba8a7a808159f1261ac9d Mon Sep 17 00:00:00 2001
From: Jorgen Rydenius <jorgen@pingpong.net>
Date: Thu, 8 Aug 2013 14:57:10 +0200
Subject: [PATCH] Added detection of a browser's touch capability according to
 http://stackoverflow.com/questions/3974827/detecting-touch-screen-devices-with-javascript/3996900#comment-21579245

---
 src/prototype/prototype.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/prototype/prototype.js b/src/prototype/prototype.js
index ef5b04604..10e6f5afc 100644
--- a/src/prototype/prototype.js
+++ b/src/prototype/prototype.js
@@ -136,7 +136,13 @@ var Prototype = {
       div = form = null;
 
       return isSupported;
-    })()
+    })(),
+    /**
+     *  Prototype.BrowserFeatures.Touch -> Boolean
+     *
+     *  Detects if the browser supports touch interaction.
+    **/
+    Touch: navigator.msMaxTouchPoints || ('ontouchstart' in document.documentElement)
   },
 
   ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script\\s*>',