How to use ajax ballonpopup extender with panel in asp.net?

Hi all,

Hope doing well,

sir i am using ajax ballonpopup extender when i click on panel it is showing the ballon popup extender. in panel i used css class cursor pointer so when i click on this panel ballon popup is showing and this panel i used under one div tag in that i used display none

this panel i am showing when user click on gridview checkbox that time. when page is loading that time this panel is visible false.

and when user click on gridview checkbox that time it's showing. for this i used one jquery but that time when i click on this panel it's

going to an unknown page and one message box is poping "invalid argument".

but if i remove display:none from div tag so it's working fine.

i am not getting why it's happening.

thanks