Formula for cross of stochastic in different time frames

[msievers2008]

Is it possible to get eSignal to pop up an alert when the stochastics cross on a monthly, weekly, daily or any time frame? I sometimes use pop up alerts at set price levels, but it would be great to have the alert tied to a fast vs. slow stochastic cross or even a price cross of a moving average. For example, trigger a pop up alert if the current price falls above or below the 20 day simple moving average price.

Are there formulas to do this?