function cdtime(container, targetdate){
if (!document.getElementById || !document.getElementById(container)) return
this.container=document.getElementById(container)
this.currentTime=new Date()
//targetdate au format dd/mm/aaaa hh:mm:ss
day = targetdate.substring(0,2);
month = targetdate.substring(3,5);
year = targetdate.substring(6,10);
hours = targetdate.substring(11,13);
minutes = targetdate.substring(14,16);
seconds = targetdate.substring(17,19);
this.targetdate=new Date(year,month-1,day,hours,minutes,seconds);
this.timesup=false
this.updateTime()
}

cdtime.prototype.updateTime=function(){
var thisobj=this
this.currentTime.setSeconds(this.currentTime.getSeconds()+1)
setTimeout(function(){thisobj.updateTime()}, 1000) //update time every second
}

cdtime.prototype.displaycountdown=function(baseunit, functionref){
this.baseunit=baseunit
this.formatresults=functionref
this.showresults()
}

cdtime.prototype.showresults=function(){
var thisobj=this


var timediff=(this.targetdate-this.currentTime)/1000 //difference btw target date and current date, in seconds

if (timediff<0){ //if time is up
this.timesup=true
timediff=-timediff;
}
var oneMinute=60 //minute unit in seconds
var oneHour=60*60 //hour unit in seconds
var oneDay=60*60*24 //day unit in seconds
var dayfield=Math.floor(timediff/oneDay)
var hourfield=Math.floor((timediff-dayfield*oneDay)/oneHour)
var minutefield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour)/oneMinute)
var secondfield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour-minutefield*oneMinute))
if (hourfield<10) hourfield="0"+hourfield;
if (minutefield<10) minutefield="0"+minutefield;
if (secondfield<10) secondfield="0"+secondfield;
this.container.innerHTML=this.formatresults(dayfield, hourfield, minutefield, secondfield)
setTimeout(function(){thisobj.showresults()}, 1000) //update results every second
}


// FONCTION D'AFFICHAGE

function formatresults(){
var displaystring="";
if (this.timesup==false){//if target date/time not yet met
	displaystring="-";
}
displaystring=displaystring+arguments[0];
if (Math.abs(arguments[0])>1) displaystring=displaystring+" jours "; else displaystring=displaystring+" jour ";
displaystring=displaystring+arguments[1]+":"+arguments[2]+":"+arguments[3];
return displaystring
}