How does this simple electronic circuit work?

I need this type of a circuit but I can't figure out how it works. Here's the link: http://www.simprojects.nl/toggle_to_momentary.htm There are two circuits on that page but all I would like to know is how the first one works. Can someone please help me? Any help is highly appreciated. :) show more I need this type of a circuit but I can't figure out how it works.

Here's the link:

http://www.simprojects.nl/toggle_to_momentary.htm

There are two circuits on that page but all I would like to know is how the first one works.

Can someone please help me?

Any help is highly appreciated. :)
4 answers 4