JavaScript Automatic Page Refresh Countdown Timer Code Snippet

JavaScript Automatic Page Refresh Countdown Timer Code Snippet
This script automatically refreshes (reloads) your web page every few seconds and displays the countdown timer inside the status bar. Easy configuration of refresh interval and display status. Copy and paste code installation. Cross-browser.
Script is live in action, see status bar on bottom of web page!

Install it

Step 1: Open your web page. Paste the following code between the <head> and </head>tags:

// IMPORTANT: 
// If you add this script to a script-library or script-archive 
// you have to add a link to http://www.24fun.com on the webpage 
// where this script will be running.

////////////////////////////////////////////////////////////////////////////
// CONFIGURATION STARTS HERE

// Configure refresh interval (in seconds)
var refreshinterval=5

// Shall the coundown be displayed inside your status bar? Say "yes" or "no" below:
var displaycountdown="yes"

// CONFIGURATION ENDS HERE
////////////////////////////////////////////////////////////////////////////

// Do not edit the code below
var starttime
var nowtime
var reloadseconds=0
var secondssinceloaded=0

function starttime() {
	starttime=new Date()
	starttime=starttime.getTime()
    countdown()
}

function countdown() {
	nowtime= new Date()
	nowtime=nowtime.getTime()
	secondssinceloaded=(nowtime-starttime)/1000
	reloadseconds=Math.round(refreshinterval-secondssinceloaded)
	if (refreshinterval>=secondssinceloaded) {
        var timer=setTimeout("countdown()",1000)
		if (displaycountdown=="yes") {
			window.status="Page refreshing in "+reloadseconds+ " seconds"
		}
    }
    else {
        clearTimeout(timer)
		window.location.reload(true)
    } 
}
window.onload=starttime
</script>

Step 2: Open your web page. Go to the top of the script and configure the refresh interval and the display status

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