Supression of Advanced alerts

 We want to have an alert ONLY trigger between the hours of 5 PM and 8AM the next day (basically only trigger outside of normal hours). I don't see a way that works in the Alert and I am thinking I will need to setup 3 different alerts for this (using time conditions for each): one for th Midnight to 8 AM Mon-Fri, one for 5pm to Midnight Mon-Fri and one for Saturday and Sunday. I'd LIKE to do it with one alert and not three... is there anyway of scripting that into the suppression field (like suppress this alert if it is Mon and between 8am and 5pm)?

 

Thanks for any help!!!!