How do i make a timer (that counts up) with flash action script 2?

I'm making a game where u r the mouse cursor and you have to avoid obstacles. But, i want to add a timer that counts up and will show the time u lasted until you have hit an obstacle. how would i do this?How do i make a timer (that counts up) with flash action script 2?
There are no Timer class in AS2. but this should help you out: A custom Timer class -%26gt;





http://www.jamesor.com/2006/10/18/as2-ti鈥?/a>