//Define a couple of global variables.
	var timerID = null
	var timerRunning = false
	
	function stopTimer(){
		//stop the clock
		if(timerRunning) {
			clearTimeout(timerID)
			timerRunning = false
			}
	} 
	
	function startTimer(){
		// Stop the clock (in case it's running), then make it go.
		stopTimer()
		runClock()
	}
	
	function runClock(){

		document.getElementById("face").innerHTML = timeNow()
		//Notice how setTimeout() calls its own calling function, runClock().
		timerID = setTimeout("runClock()",1000)
		timerRunning = true
	}
	
	function timeNow() {
		//Grabs the current time and formats it into hh:mm:ss am/pm format.
		now = new Date()
		hours = now.getHours()
		minutes = now.getMinutes()
		seconds = now.getSeconds()
		timeStr = "" + ((hours > 12) ? hours - 12 : hours)
		timeStr  += ((minutes < 10) ? ":0" : ":") + minutes
		timeStr  += ((seconds < 10) ? ":0" : ":") + seconds
		timeStr  += (hours >= 12) ? " PM" : " AM"
		return timeStr
	}