I guess, I should have searched the swfobject forums.

To check also that the property isn’t a function seems like a good idea.
And also checking for string or a number looks suffice although not as neat as hasOwnProperty.

Thanx,
Guy

We have had a few threads on this issue now on the swfobject 1.x forum. One suggestion was to do a check for only string and number properties when in the for in loop within swfobject.

http://blog.deconcept.com/swfobject/forum/discussion/753/

After reading the hasOwnProperty thread you provided, it seems you would require a combination of both hasOwnProperty AND checking that the property is not a function (as a function can be added directly to an instance rather than to the prototype chain in general).

Also I think you have a typo:

“The hasOwnProperty function returns true only if the property is not built-in and not in the prototype chain…”

should be:

“The hasOwnProperty function returns true only if the property is built-in and not in the prototype chain…”

Cheers,
Aran