Stochastic Crossover Alert

I have a relatively simple request for a Stochastic Indicator which alerts on the crossover, but only when it happens above the overbought area and below the oversold area:

• ·         It needs to have the inputs," K Period", "D Period" and "Slow". These must be to 8,3,3 as default, but be able to be changed.

• ·         These will be displayed as 2 lines which will crossover in a separate window to the currency chart.
  

• ·         It needs to have the inputs "Sound" "Pop Up" and "Alert" with the option to disable these. On will be the default setting
  

• ·         "Sound" on will trigger an audible alert which I should be able to change, ie, from a simple sound to a song.

•        "Pop Up" will create a pop up on the PC,  informing of whether the cross over is bull/bear, the currency and the time frame, ie, "Stochastic crossover - Bear - EU/USD - 15 min

• ·         "Alert" will send a notification to a mobile with the same information as above.

• ·         The sound, pop up and alert is only to be triggered whenever a crossover happens either above the overbought or below the oversold levels.

• ·         The overbought level is to be 80 by default, but able to be changed.

• ·         The oversold level is to be 20 by default, but able to be changed.

• ·         It should work on all timeframes, but specifically the 15 minute time frame.

•       It should work on all currencies.

• ·         I want it to operate on a separate window.

• ·         I want to see the 0,20,80 and 100 levels on this window.

• ·         There needs to be arrows marking the candle where the crossover has occurred. I need to be able to turn this off.

• ·         I want to be able to back test this where the arrows are concerned.