IE6 is reporting an error for this line:

Code:
$('#receptioncontent').animate({opacity: 'toggle', height: 'toggle'}, 'fast');
The error is:

"Unexpected call to method or property access."

It's strange because (I think) everything on the page works correctly - so I don't understand the error. If I uncomment the line above there are no errors.

jQuery version is 1.3.2

I'm testing in IE6 on Windows XP SP3.

How can I stop this error from being reported?

Thanks,