Alert needed

I would like an alert making when the following two MA's cross (not just touching):

2 exponential MA (close)
3 exponential MA (open)

I don't mind if the alert is a arrow on the chart or a pop up window with sound alert.

If anyone can help I would be greatful.

Thanks,
Dave

look for MA_Crossover_Signal_with_Wav it draws an Arrow.
see attached files. I hope this helps.

Thanks pipmonger, how do you set it, for example, fone MA for close and one for open (ie 2 ema close and 3 ema open).

Or maybe you could try these Dave.
Dave

Thank you Acko.