Smart AJAX autosave?

[Triexa]

I have an autosave feature that, well... autosaves every minute. Now I could very well become the biggest abuser of my own feature. I currently have 8 windows open - I tend to just leave windows open for a long time. As a result, the javascript would be running every minute saving, creating unnecessary load on the server.

How could I make the autosave smart and only save if they are actively "working" with it? The only thing I can really think of is to have like a variable that sets to true whenever something happens, set to false whenever it saves, and only save when the var is true. Problem is, I have a lot of functions for events that I would need to attach it to... I'm sure I would miss it somewhere.

Any other ideas?

[krakjoe]

Can I have a look at the page in question so I can see what you're on about ?

[smallbuzz]

Can you put a key press event on the body element of all the pages? Whenever a key is pressed, set a global variable to true. Save only if that variable is true, reset it to false afterwards.

[Triexa]

Can you put a key press event on the body element of all the pages? Whenever a key is pressed, set a global variable to true. Save only if that variable is true, reset it to false afterwards.

99.9% sure you can't attach any key event to the body...

[smallbuzz]

how about wrap the page in a div, then you can put an event on it