load another page into update panel without using iFrame tag in asp.net

I have one static page that have one menu and one updatepanel tag. by selecting menu items i want to load another page into update panel n开发者_如何学JAVAow i use iFrame tag for do this and on menu items click i have change iFrame's src property but it have some major problems I want to load another page into current page in asp.net ajaxly without using IFrame tag like blogger , getclicky and other popular sites.

you could wrap your page content into user control rather whole new asp.net page itself. Then by selecting menu items you hide and display right user controls.

http://msdn.microsoft.com/en-us/library/fb3w5b53.aspx#Y700