this[0].ownerDocument is null in IE6

[jmaki]

In IE6, jQuery throws on error when attempting to calculate the body offset in jQuery.fn.offset. On line 4175, the browser attempts to access the "body" property of this[0].ownerDocument, but this[0].ownerDocument.body is null.

I *think* the correct behavior can be achieved by changing the line above to:

if ( !this[0]

!this[0].ownerDocument ) return { top: 0, left: 0 };

[jmaki]

Argh; sorry, the code got messed up. It should be:

 if ( !this[0] || !this[0].ownerDocument ) return { top: 0, left: 0 };

[dmethvin]

That will get rid of the error, for sure, but under what circumstances does this error occur? Can you provide a test case?

[dmethvin]

Fixed here:  http://github.com/jquery/jquery/commit/2c28f229e5eb49f1469fd36ee979529a492f0f42