asp.net ajax and size websit

hi

i have website with updatepanal the size its big how can i reduce the size of website

that because (asp.net ajax updatepanal)

What do you have in the UpdatePanel that is making it big? Remember that if you are transferring large amount of data you may be better of by using the postback solution.
thank u for replay my problem in the size javascript for asp.net ajax not i because the size id 266kb