Javascript Countdown Timer Between Two Dates

[dlebowski]

I want to be able to take two dates with times and want to show a realtime countdown. I need it to be to the second. For example:

 

Start:

Year: 2012

Day: 09

Month: 12

Hour: 10

Minute: 12

Second: 35

 

End:

Year: 2012

Day: 09

Month: 12

Hour: 10

Minute: 13

Second: 45

 

Displayed: 0 days 0 hours 1 minute 10 seconds

 

I want this countdown realtime on the screen. So far, all of the scripts I have found have been to the minute and also used the client sides clock to determine the countdown. I just need it to countdown in seconds and utilize to specified dates and times.

 

Any help with this would be awesome. Thanks in advance.

[dlebowski]

Okay. I'm getting closer. Here is my code:

 

var date1, date2, sec, hours, min;
    window.onload = function () {
	    //MM/DD/YYYY HH:MM:SS PM or AM
	    date1 = new Date("04/12/2011 07:14:00 PM");
	    date2 = new Date("04/12/2011 07:14:20 PM");
	    sec = (date2.getTime() / 1000.0) - (date1.getTime() / 1000.0);
	    hours = parseInt(sec / 60 / 60);
	    sec = sec - hours * 60 * 60;
	    min = parseInt(sec / 60);
	    ses = sec - min * 60;
	    calc();
    }
    function calc() {
	    if (hours<=0&&min<=0&&sec<=0)
	    {
		    alert("cool");
	    }

	    else
	    {
		    sec--;
	    var day=Math.floor(hours/(60*60*1000*24)*1)

	    day.innerHTML = day;
	    hrs.innerHTML = hours;
	    mins.innerHTML = min;
	    secs.innerHTML = sec;
	    setTimeout("calc()", 1000);
	    }
    }

 

All I need to do now, is just have the hours become days if they are more than 24. For example if hours are 25, this is what it would look like:

 

1 days 1 hours 1 minute 10 seconds

 

Current it does this:

 

25 hours 1 minutes 10 seconds

 

Again, any help would be great. Thank you.