Free JavaScript: Digit and Date Countdown Generator

var countdownid=new Array()
var futuredate
var nowdate
var resulthoursraw
var resulthours
var resultminutesraw
var resultminutes
var resultsecondsraw
var resultseconds

var p_seconds
var p_minutes
var p_hours
var p_days

var resultsecondsonly
var resultminutesonly
var resulthoursonly
var content

var i_countdown=-1
var countdownid

var step=1
speed*=1000

if (digitfrom>digitto) {step=-1}
if (digitfrom<digitto) {step=1}

var browserinfos=navigator.userAgent 
var ns4=document.layers
var ie4=!document.getElementById&&document.all&&!browserinfos.match(/Opera/)
var ie5=document.getElementById&&document.all&&!browserinfos.match(/Opera/)
var ns6=document.getElementById&&!document.all&&!browserinfos.match(/Opera/)
var opera=browserinfos.match(/Opera/)

function setfuturedate() {
	futuredate=new Date(futureyear,futuremonth,futureday,0,0,0)
	if (digitordate=="isdigit") {content=digitfrom-step	}
	docountdown()
}

function docountdown() {
	if (digitordate=="isdate") {
		calculateresults()
		formatresults()
		displayresults()
		setTimeout("docountdown()",speed)
	}
	else if (digitordate=="isdigit") {
		content+=step	
		displayresults()
		if (content==digitto) {
			setTimeout("happensafter()",speed)
		}
		else {
			setTimeout("docountdown()",speed)
		}
	}
}

function firstcountdown() {
	if (digitordate=="isdate") {
		futuredate=new Date(futureyear,futuremonth,futureday,0,0,0)
		calculateresults()
		formatresults()
	}
	else if (digitordate=="isdigit") {
		content=digitfrom
	}
}

function calculateresults() {
nowdate=new Date()
resultdaysraw=(Date.parse(futuredate)-Date.parse(nowdate))/1000/60/60/24
if (displaytype!="showall") {
	resultsecondsonly=Math.floor((Date.parse(futuredate)-Date.parse(nowdate))/1000)
	resultminutesonly=Math.floor((Date.parse(futuredate)-Date.parse(nowdate))/1000/60)
	resulthoursonly=Math.floor((Date.parse(futuredate)-Date.parse(nowdate))/1000/60/60)
}
else {
	resultdays=Math.floor((Date.parse(futuredate)-Date.parse(nowdate))/1000/60/60/24)
	resulthoursraw=(resultdaysraw-resultdays)*24
	resulthours=Math.floor((resultdaysraw-resultdays)*24)
	resultminutesraw=(resulthoursraw-resulthours)*60
	resultminutes=Math.floor((resulthoursraw-resulthours)*60)
	resultsecondsraw=(resultminutesraw-resultminutes)*60
	resultseconds=Math.floor((resultminutesraw-resultminutes)*60)
	}
}

function formatresults() {
	if (displaytype=="showall") {
		if (resultdays>1) {p_days="days"}
		else {p_days="day"}
		if (resultminutes<10) {resultminutes="0"+resultminutes}
		if (resultseconds<10) {resultseconds="0"+resultseconds}
		content=resultdays+" "+p_days+" "+resulthours+"h "+resultminutes+"m "+resultseconds +"s"
	}
	else if (displaytype=="showdays") {
		if (resultdays>1) {p_days="days"}
		else {p_days="day"}
		content=resultdays+" "+p_days
	}
	else if (displaytype=="showhours") {
		content=resulthoursonly+" hrs"
	}
	else if (displaytype=="showminutes") {
		content=resultminutesonly+" min"
	}
	else if (displaytype=="showseconds") {
		content=resultsecondsonly+" sec"
	}
}

function happensafter() {
	if (aftercountdown=="repeatit") {
		if (digitordate=="isdigit") {content=digitfrom-step}
		docountdown()
	}
	if (aftercountdown!="stopit" && aftercountdown!="repeatit") {
		document.location.href=aftercountdown
	}
}

function setcountdown() {
	if (ns4 || ie4 || ie5 || ns6 || opera) {
		firstcountdown()
		i_countdown++
		countdownid[i_countdown]="countdown"+i_countdown
		document.write("<span id='"+countdownid[i_countdown]+"' style='position:relative'>"+content+"</span>")
	}
}

if (ie4 || ie5 || ns6 || opera) {
	onload=setfuturedate
}
</script>