Saving state

Sorry about the cross posting, as im not exactly sure what would be the best method to handle this, but im trying to set up a web application with a tabbed interface. Each tab will have a form to enter data, and the requisite save and continue button. Heres where things get hard though. I want to be able to allow users to click on a previous tab to refrence, change, update, etc the information on those tabs. How do i save the state of these tabs so that they can be reaccessed? Just so you have a little more information, im trying to make a kinda simple call logging system with a customer tab which would hold customer info and a calls tab which would store call info and allow you to switch between call records. all of this data would be stored in a database, but i dont want to actually have to send a new query to the database just because the user clicked on a previous tab...if this would be possible. Also, if anyone has an idea as to how i can implement this a bit more intelligently, im open to suggestions, but the tabbed interface seemed to be the most user friendly. And yes, the web interface is important, which is why im not trying to do it in c++ or something like that. Shiloh