From: Brandon Aaron <brandon.aaron@gmail.com>
Date: Wed, 19 Dec 2007 19:07:12 +0000 (+0000)
Subject: offset: make sure there is a parent node to work on while calculating scroll offsets... 
X-Git-Url: http://git.asbjorn.it/?a=commitdiff_plain;h=e2fc993334698b2a66dd24a671a9c23705df0fc3;p=jquery.git

offset: make sure there is a parent node to work on while calculating scroll offsets (#2073)
---

diff --git a/src/offset.js b/src/offset.js
index cf1af33..8ee5680 100644
--- a/src/offset.js
+++ b/src/offset.js
@@ -55,7 +55,7 @@ jQuery.fn.offset = function() {
 			}
 		
 			// Get parent scroll offsets
-			while ( parent.tagName && !/^body|html$/i.test(parent.tagName) ) {
+			while ( parent && parent.tagName && !/^body|html$/i.test(parent.tagName) ) {
 				// Remove parent scroll UNLESS that parent is inline or a table to work around Opera inline/table scrollLeft/Top bug
 				if ( !/^inline|table.*$/i.test(jQuery.css(parent, "display")) )
 					// Subtract parent scroll offsets