From d3d0d1e007c1273390c5ba018fc670f4d9f000c4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89ric=20Lemoine?= <eric.lemoine@gmail.com>
Date: Tue, 23 Apr 2013 14:44:36 +0200
Subject: [PATCH] Test isElement instead of isDef (thanks @fredj)

---
 src/ol/map.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/ol/map.js b/src/ol/map.js
index 180887aefa..cfa2e6d613 100644
--- a/src/ol/map.js
+++ b/src/ol/map.js
@@ -691,10 +691,14 @@ ol.Map.prototype.handleSizeChanged_ = function() {
  * @private
  */
 ol.Map.prototype.handleTargetChanged_ = function() {
+  // target may be undefined, null or an Element. If it's not
+  // an Element we remove the viewport from the DOM. If it's
+  // an Element we append the viewport element to it.
   var target = this.getTarget();
-  if (!goog.isDef(target)) {
+  if (!goog.dom.isElement(target)) {
     goog.dom.removeNode(this.viewport_);
   } else {
+    goog.asserts.assert(goog.isDefAndNotNull(target));
     goog.dom.appendChild(target, this.viewport_);
   }
   this.updateSize();