Saving html form data to client

[jiml]

I don't know if this is possible due to the web browser security model, but you don't know unless you ask.

I have a requirement to allow users to work on html forms while they are not connected to the internet, like when they are flying on a plane.

So they need to be able to save the html form data, then load it again later. They may need to work on many documents, each with a different set of data, same html form.

I would prefer to do this with just html and javascript, but if not possible if anyone can recommend an applet or plugin that might do the trick.

I know you can save the html page to the client through the web browser (File->Save As) and you can save a pdf document through the plugin. I want to do something similar but with the html form data.

I thought about using cookies, but since they may have many of the sets of data to work on, there may not be enough space in the cookies for one domain.

Thanks a bunch for any replies,
Jim