// taken from http://scripts.franciscocharrua.com/countdown-clock.php
// modified specifically for Peter's Date Countdown: http://www.theblog.ca/?p=41
function countdown_clock(year, month, day, hour, minute, i, timediff)
         {
         html_code = '<span id="pdc_item' + i + '"></span>';
         
         document.write(html_code);
         
         countdown(year, month, day, hour, minute, i, timediff);              
         }
         
function countdown(year, month, day, hour, minute, i, timediff)
         {
        
         Today = new Date();
	pdc_servergmt = -5;
         pdc_gmt = pdc_servergmt + Today.getTimezoneOffset()/60;
         Todays_Hour = Today.getHours() + pdc_gmt + timediff;                  
         
         //Convert both today's date and the target date into milliseconds.                           
         Todays_Date = (new Date(Today.getFullYear(), Today.getMonth(), Today.getDate(), 
                                 Todays_Hour, Today.getMinutes(), Today.getSeconds())).getTime();                                 
         Target_Date = (new Date(year, month, day, hour, minute, 00)).getTime();    
                  
         // Find their difference, and convert that into seconds.                  
         Time_Left = Math.round((Target_Date - Todays_Date) / 1000);
		if(Time_Left > 0) {
                    days = Math.floor(Time_Left / (60 * 60 * 24));
                    Time_Left %= (60 * 60 * 24);
                    hours = Math.floor(Time_Left / (60 * 60));
                    Time_Left %= (60 * 60);
                    minutes = Math.floor(Time_Left / 60);
                    Time_Left %= 60;
                    seconds = Time_Left;
		}
		else if(Time_Left < 0) {
                    days = Math.ceil(Time_Left / (60 * 60 * 24));
                    Time_Left %= (60 * 60 * 24);
                    hours = Math.ceil(Time_Left / (60 * 60));
                    Time_Left %= (60 * 60);
                    minutes = Math.ceil(Time_Left / 60);
                    Time_Left %= 60;
                    seconds = Time_Left;
		}
         
                    dps = 's';
                    //ps is short for plural suffix.
                    if(Math.abs(days) == 1) dps ='';

			  pdc_div = document.getElementById('pdc_item' + i);
                    
                    pdc_div.innerHTML = '<strong>' + days + '</strong> day' + dps + ' ';
                    pdc_div.innerHTML += hours + 'h' + ' ';
                    pdc_div.innerHTML += minutes + 'm' + ' ';
                    pdc_div.innerHTML += seconds + 's' + ' ';
               
         // Recursive call, keeps the clock ticking.
         setTimeout('countdown(' + year + ',' + month + ',' + day + ',' + hour + ',' + minute + ',' + i + "," + timediff + ');', 1000);
         }