Problem with refresh in IFRAME

[praseeth]

Hi ,
I'm redesiging an existing app to make use of IFrame.In the
webpage the top menu remains static and the content is presented in an
IFrame.The navigation between content pages happens using Hyperlinks
and Input buttons.
The problem comes after traversing few pages when the refresh
button in the browser is hit.Instead of the current page being
reloaded, the first page is loaded (page given in the SRC attribute) .
I tried to update the SRC attribute of the IFrame with the URL of the
currently loaded page. It didn't work out correctly.Please help!!!
Thanks in advance

Praseeth