In that instance, you'd abort the previous request, create a new XmlHTTPRequest object (important step), then re-issue the request.
Also - I'm not necessarily using XMLHTTPRequest, I'm leaning towards dynamic scripting as my site will need this widget to run across several different subdomains - dynamic scripting doesn't have a lot of the nice status functionality that XMLHTTPRequest does...
When a user needs to save their note
If the note is already saving
Set note.saveAgain = true
else
Start the process of saving the note
When the note has saved
If note.saveAgain == true
Set note.saveAgain = false
Start the process of saving the note again
That doesn't require a queue. It also only saves the most up to date version.Thanks again.
Edit: How dare I ask to be compensated for my time. I should be ashamed of myself.
If you have any more questions, feel free to ask.