Don't remember the thread but it was probably about using localStorage

Look at :
http://www.w3.org/TR/webstorage/#the-localstorage-attribute
http://diveintohtml5.info/storage.html

Pattern is usually:
When you successfully retrieve data on line put it into local store.
When you are unsuccessful in retrieving data (i.e. offline) supply the local store version instead. Shout if you need more detail.....


>I have been searching (but to no avail) for the thread that someone started earlier this year which dealt with saving page data in the page cache (when there is no connection to the server). I think it had to do with a feature of HTML5. If anyone knows/remembers the thread ID, please let me know.
>
>TIA.