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<SCRIPT LANGUAGE="JavaScript">
<!--// Copyright (c) 1996 Tomer Shiran. All rights reserved.
// Permission given to use this script provided that the copyright
// notice remains as is. Additional scripts and information are 
// available at http://www.geocities.com/SiliconValley/9000/
// set initial values
var timerRunning = false
var timerID = null
// create instance of Date object representing current time
var initial = new Date()

// start timer
function start() {	
	// set the button's label to "stop"
		document.forms[0].general.value = "stopp"	
	// assign the stop function reference to the button's onClick event handler	
		document.forms[0].general.onclick = stop	
	// ask the user if to reset the timer
	   if (confirm("Vill du nollställa tidtagningen?"))
      	// set global variable to new time		
		initial = new Date()			
	// assign milliseconds since 1970 to global variable	
		startTime = initial.getTime()	
	// make sure the timer is stopped	
		stopTimer()	
	// run and display timer	
		showTimer()
}

// set button to initial settings

function stop() {	
	// set the button's label to "start"
		document.forms[0].general.value = "start"	
	// assign the start function reference to the button's onClick event handler	
		document.forms[0].general.onclick = start	
	// stop timer	
		stopTimer()
}
	// stop timer

function stopTimer() {	
	// if the timer is currently running	
		if (timerRunning)		
	// clear the current timeout (stop the timer)		
		clearTimeout(timerID)	
	// assign false to global variable because timer is not running	
		timerRunning = false
}

function showTimer() {	
	// create instance of Date representing current timer	
		var current = new Date()	
	// assign milliseconds since 1970 to local variable	
		var curTime = current.getTime()	
	// assign difference in milliseconds since timer was cleared	
		var dif = curTime - startTime		
	// assign difference in seconds to local variable	
		var result = dif / 1000	
	// is result is not positive	
		if (result < 1)		
	// attach an initial "0" to beginning		
		result = "0" + result		
	// convert result to string	
		result = result.toString()	
	// if result is integer	
		if (result.indexOf(".") == -1)	
	// attach ".00" to end		
		result += ".00"	
	// is result contains only one digit after decimal point	
		if (result.length - result.indexOf(".") <= 2)		
	// add a second digit after point		
		result += "0"	
	// place result in text field	
		document.forms[0].display.value = result	
	// call function recursively immediately (must use setTimeout to avoid overflow)	
		timerID = setTimeout("showTimer()", 0)	
	// timer is currently running	
		timerRunning = true
}
// -->
</SCRIPT>

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