Ajax update progerss not working in server

Hi all
Im using update progress of ajax in my project .Its working well im my system iis but not coming while adding the same copy to server.what may the reason.Adding process is slow as i want to send email and sms in the same button so i put update progress which is working also.but cant understand why its not working in server machine. is that machine missing any plugin ..

Thanks in Advance
Amrutha