Is this done somehow with EventStopPropagation? I'd like to prevent a down-drag page refresh when a pop-up frame is visible. What would be the code for that?
Never mind. I see that Google has my answer already. 
for others reference, here is an answer
Day 53: disabling pull-to-refresh - Manuel Matuzovic).
Thanks, Bruno! I still had not found the real solution before seeing the link you nicely provided here.