How to handle multiple request in same session in same window.

Hi,

I need some suggestions for proceeding with the following scenario.

Our current struts application is session oriented. So users can open a single tab in browser and use the application. And all the ids and some required values will be stored in session and retrieved in later point of time. And because of this is , user opens a new tab in the same window, the new values are getting stored in session the old ones are replaced. If the user access in multiple window, then its working properly. Since it will be different session.
Kindly let me know how to handle multiple request within a browser( Different tabs) in struts. Currently i am setting all the required variables in request and getting it. Any other better way of doing it in struts.

Thanks
Vijay