original value of slider

original value of slider

I did a search (both on these forums and Google) and couldn't find an answer. I am wondering if there is a way to obtain the original value of the slider so I can see if the value has changed? I don't want the "stop" event to do my ajax call if the value hasn't changed, and the way the slider works, the stop and change events are triggered even if the value has not changed so my ajax call gets called if the user slides and sets it back to the same value it was.