offset(): parent has no properties

[daepark]

When calling offset, I sometimes get parent is not defined ("parent has no properties") error in firebug. The offending line is:

while ( parent.tagName && !/^body|html$/i.test(parent.tagName) ) {

checking for parent first seems to make this problem go away:

while ( parent && parent.tagName && !/^body|html$/i.test(parent.tagName) ) {

[brandon]

Fixed in [4241]