Additional characters was added to website link in my fillable forms

Hello,
 
Quick question:
We created a fillable form in Acorbat Professional 8. Everything works expect for few website links. We had about 40 website links were created in the form, for some reasons, two website links has addtional charaters added at the end of .htm.
 
For example: in the design mode, the link shows up as: [link=http://www.acrobat.com/uer.htm;]www.acrobat.com/uer.htm;[/link] but in the finished form, when I move the mouse cursor over to the link, it shows: [link=http://www.acrobat.com/user.htmGenerate]www.acrobat.com/user.htmGenerate[/link]
 
Any suggestion?
 
Thanks.
 
Feng