function dcountup(startingdate, baseunit){
	this.currentTime=new Date()
	this.startingdate=new Date(startingdate)
	this.timesup=false
	this.baseunit=baseunit
	this.start()
}

dcountup.prototype.oncountup=function(){} //default action for "oncountup"

dcountup.prototype.start=function(){
	var thisobj=this
	this.currentTime.setSeconds(this.currentTime.getSeconds()+1)
	var timediff=(this.currentTime-this.startingdate)/1000 //difference btw target date and current date, in seconds
	var oneMinute=60 //minute unit in seconds
	var oneHour=60*60 //hour unit in seconds
	var oneDay=60*60*24 //day unit in seconds
	var dayfield=Math.floor(timediff/oneDay)
	var hourfield=Math.floor((timediff-dayfield*oneDay)/oneHour)
	var minutefield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour)/oneMinute)
	var secondfield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour-minutefield*oneMinute))
	var secondfield=Math.floor(timediff)
	var result={days: dayfield, hours:hourfield, minutes:minutefield, seconds:secondfield}
	this.oncountup(result)
	setTimeout(function(){thisobj.start()}, 1000) //update results every second
}


//since when counting
var mypastevent=new dcountup("May 08, 2008 13:30:01", "seconds")

mypastevent.oncountup=function(result){
	//result is an object containing the current count up date/time, updated every second
	var mycountainer=document.getElementById("cpcontainer")
	//mycountainer.innerHTML="<strong>Ford KPI: "+result['seconds']+" </strong> <br /> (Key Performance Indicator) <br /> <span style='color:#444;'>Number of parts packaed without error</span>"
}