How to build a 120v 3 channel flasher?

I'm tring to build a AC 120v circuit for a light display at work. It will have 3 light bulbs on it that need to light in sequence. Basicly one light would come on, stay on 3-5 sec then it would turn off while the 2nd one turns on etc... I know it will involve a 555 timer but I cant seem to find any schematics... show more I'm tring to build a AC 120v circuit for a light display at work. It will have 3 light bulbs on it that need to light in sequence. Basicly one light would come on, stay on 3-5 sec then it would turn off while the 2nd one turns on etc... I know it will involve a 555 timer but I cant seem to find any schematics online that are for AC. Lights to go has one for sale but its $40 and since how I'm doing this for a display at work I do not want to spend that much of my own money. Any help would be greatly appreciated. Also I should point out that I do have basic knowlede on how to build circuits I just need a diagram and parts list.
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