How to maintain scroll position on postback in asp.net web page in FireFox and Chrome

I tried some methods to maintain scroll position on postback but none worked they are

1) In page declaration MaintainScrollPositionOnPostback="true"

2) In Code behind  Page.MaintainScrollPositionOnPostBack = true

3)In web.config file in <system.web>  section <pages maintainScrollPositionOnPostBack="true" />

i am not using any updatepanel. Please give me some solution. Thanks in advance