From ffbd526bbbadfab3e80467912f0fe0b67abbd09d Mon Sep 17 00:00:00 2001
From: Sean Harvey <sean@silverstripe.com>
Date: Fri, 24 Oct 2008 02:05:54 +0000
Subject: [PATCH] BUGFIX Fixed non-object or not null error in
 TreeSelectorField

git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@64736 467b73ca-7a2a-4603-9d3b-597d59a354a9
---
 javascript/TreeSelectorField.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/javascript/TreeSelectorField.js b/javascript/TreeSelectorField.js
index dce02f6f8..3dd28aa50 100755
--- a/javascript/TreeSelectorField.js
+++ b/javascript/TreeSelectorField.js
@@ -99,7 +99,7 @@ TreeDropdownField.prototype = {
 			}
 			
 			// This iframe stretching doesn't work with the greybox
-			if(this.iframeObj.id == 'GB_frame') return;
+			if(this.iframeObj && this.iframeObj.id == 'GB_frame') return;
 			
 			var desiredHeight = Position.cumulativeOffset(this.itemTree)[1] + this.itemTree.offsetHeight + 2;
 			if(this.iframeObj && desiredHeight > this.iframeObj.offsetHeight) {