hi,
I'm using web control : I have the rjs popcalendar control in a multiview control within an update panel
and it works correctly in some web pages and not correctly in other pages
despite of all pages that contain popcalendar are the same
why?how to solve this problem?

I check javascript for pages, the pages are the same.what i can do?
what may cause this problem?there is any idea to solve the problem