Proper post back in Mozilla firefox

See more:

C#

Hi all,

I am using Jquery Model pop with OK and CANCEL button in my web application.
I want postback my page on OK button of Model Pop up for that i am using

__doPostBack('ctl00$ContentPlaceHolder1$grdOrder$ctl02$btnDress', '')

Its working fine with IE, but Mozilla firefox having some issue like.
It is pausing some second while postback.

Please can any one help me.

Thanks in advance