The javascript code of the version 4.0 is encrypted. If you need to have access to the source code, you can purchase the source code license.

>>Furthermore, we don't see, in IE (but it runs OK in Firefox), the content of the link Type dropdown menu in the link dialog box.

Can you reproduce the problem in the following link?

http://cutesoft.net/asp/EnableAll.asp

What's new in the version 4.0?

http://cutesoft.net/forums/8814/ShowPost.aspx

Hope it helps.

Let me know if you have any further questions.