My Web application makes use of Ext JS & Java web technology. Due to the size and complexity of the application, I need to
do a complete refresh of the page (load a different page) when user select some menu from the menu bar. What is the best what to redirect to the required page?

For example, In my main menu, I have two menu Stock & Location. These two menu will take
the user to different JSP files (stockmgt.jsp & locmgt.jsp) with new layouts,menu items etc.

One possibility is to use location.href in the button or menu handler. But if I do this, will I retain the session variables, and other parameters?

What are the best practices in doing these kind of redirect or page refresh?

Thanks in advance for the ideas, comment and suggestions.