Save Form Field Values on Refresh / Reload

[fpwr]

Does anyone have a simple working example that I could look at of a form page that saves the field values so that they aren't lost if the page is refreshed? The suggested way that I found to do this (although no example was given) was to "serialize the values into a cookie on a page unload and then deserialize them back on page load." I know that I might be able to "hack up" (and probably screw up!) a solution but I hate to "reinvent the wheel" if someone already has done this....

Thanks for any guidance!

Paul.