error message when trying to add account

i get the following error message when trying to add an account on mint.com, i have disabled pop up blocker, but in the bottom left of my screen, i get this error:

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB5; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; InfoPath.1; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
Timestamp: Mon, 8 Mar 2010 15:51:04 UTC

Message: Object doesn’t support this property or method
Line: 181
Char: 27
Code: 0
URI: https://wwws.mint.com/sc/ph1713.39/js/library.js

Message: Object doesn’t support this property or method
Line: 181
Char: 27
Code: 0
URI: https://wwws.mint.com/sc/ph1713.39/js/library.js

Message: Object doesn’t support this property or method
Line: 181
Char: 27
Code: 0
URI: https://wwws.mint.com/sc/ph1713.39/js/library.js