From a6fa6238a29295fbe02ea12eaf95e908af389853 Mon Sep 17 00:00:00 2001
From: rma4ok <rma4ok@gmail.com>
Date: Thu, 13 Dec 2012 15:39:34 -0500
Subject: [PATCH] [fix] don't fail in old browsers

---
 lib/index.js | 75 +++++++++++++++++++++++++++-------------------------
 1 file changed, 39 insertions(+), 36 deletions(-)

diff --git a/lib/index.js b/lib/index.js
index 935ac64..7a287a7 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -1,49 +1,52 @@
 var doc = document
-  , elementProto = HTMLElement.prototype
-  , nodeProto = Node.prototype
+  , win = window
+  , elementProto = win.HTMLElement && HTMLElement.prototype
+  , nodeProto = win.Node && Node.prototype
 
 // Add support for Node.contains for Firefox < 9
-if (!doc.contains) {
+if (!doc.contains && nodeProto) {
   nodeProto.contains = function(node) {
     return !!(this.compareDocumentPosition(node) & 16)
   }
 }
 
-// Add support for insertAdjacentHTML for Firefox < 8
-// Based on insertAdjacentHTML.js by Eli Grey, http://eligrey.com
-if (!doc.body.insertAdjacentHTML) {
-  elementProto.insertAdjacentHTML = function(position, html) {
-    var position = position.toLowerCase()
-      , ref = this
-      , parent = ref.parentNode
-      , container = doc.createElement(parent.tagName)
-      , firstChild, nextSibling, node
+if (elementProto){
+  // Add support for insertAdjacentHTML for Firefox < 8
+  // Based on insertAdjacentHTML.js by Eli Grey, http://eligrey.com
+  if (!doc.body.insertAdjacentHTML) {
+    elementProto.insertAdjacentHTML = function(position, html) {
+      var position = position.toLowerCase()
+        , ref = this
+        , parent = ref.parentNode
+        , container = doc.createElement(parent.tagName)
+        , firstChild, nextSibling, node
 
-    container.innerHTML = html
-    if (position === 'beforeend') {
-      while (node = container.firstChild) {
-        ref.appendChild(node)
-      }
-    } else if (position === 'beforebegin') {
-      while (node = container.firstChild) {
-        parent.insertBefore(node, ref)
-      }
-    } else if (position === 'afterend') {
-      nextSibling = ref.nextSibling
-      while (node = container.lastChild) {
-        nextSibling = parent.insertBefore(node, nextSibling)
-      }
-    } else if (position === 'afterbegin') {
-      firstChild = ref.firstChild
-      while (node = container.lastChild) {
-        firstChild = ref.insertBefore(node, firstChild)
+      container.innerHTML = html
+      if (position === 'beforeend') {
+        while (node = container.firstChild) {
+          ref.appendChild(node)
+        }
+      } else if (position === 'beforebegin') {
+        while (node = container.firstChild) {
+          parent.insertBefore(node, ref)
+        }
+      } else if (position === 'afterend') {
+        nextSibling = ref.nextSibling
+        while (node = container.lastChild) {
+          nextSibling = parent.insertBefore(node, nextSibling)
+        }
+      } else if (position === 'afterbegin') {
+        firstChild = ref.firstChild
+        while (node = container.lastChild) {
+          firstChild = ref.insertBefore(node, firstChild)
+        }
       }
     }
   }
-}
 
-elementProto.matches =
-  elementProto.webkitMatchesSelector ||
-  elementProto.mozMatchesSelector ||
-  elementProto.oMatchesSelector ||
-  elementProto.msMatchesSelector
+  elementProto.matches =
+    elementProto.webkitMatchesSelector ||
+    elementProto.mozMatchesSelector ||
+    elementProto.oMatchesSelector ||
+    elementProto.msMatchesSelector
+}
\ No newline at end of file