function dcountup(startingdate,baseunit,param)
{
	this.currentTime=new Date(param)
	this.startingdate=new Date(startingdate)
	this.timesup=false
	this.baseunit=baseunit
	var TimerID = null
	var TimerRunning = false
	this.start()
}
dcountup.prototype.oncountup=function(){} 
dcountup.prototype.start=function()
{
	var thisobj=this 
	this.currentTime.setSeconds(this.currentTime.getSeconds()+1)
	var timediff=(this.startingdate-this.currentTime)/1000
	var dayfield,hourfield,minutefield,secondfield
	if (timediff<=0)
	{
		dayfield=hourfield=minutefield=secondfield=0
	}
	else 
	{
	var oneMinute=60 
	var oneHour=60*60 
	var oneDay=60*60*24 
	dayfield=Math.floor(timediff/oneDay)
	hourfield=Math.floor((timediff-dayfield*oneDay)/oneHour)
	minutefield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour)/oneMinute)
	secondfield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour-minutefield*oneMinute))
	}
	if (this.baseunit=="hours")
	{ 
		hourfield=dayfield*24+hourfield
		dayfield="n/a"
	}
	else if (this.baseunit=="minutes")
	{ 
	   minutefield=dayfield*24*60+hourfield*60+minutefield 
	   
	   dayfield="n/a"
	   hourfield="n/a"
	}
	else if (this.baseunit=="seconds")
	{ 
		var secondfield=timediff
		dayfield=hourfield=minutefield="n/a"
	}
	var result={days: dayfield, hours:hourfield, minutes:minutefield, seconds:secondfield}
	this.oncountup(result)
	setTimeout(function(){thisobj.start()}, 1000)
}