// JavaScript Document

function cdtime(container, targetdate){
if (!document.getElementById || !document.getElementById(container)) return//se nn supporta il w3c torna vuoto
this.container=document.getElementById(container)//carica il contenitore
this.currentTime=new Date()//prende la data di oggi
this.targetdate=new Date(targetdate)//prende la data passata dalla funzione
this.timesup=false
this.updateTime()
}

cdtime.prototype.updateTime=function(){
var thisobj=this// carico l oggetto 
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
this.container.innerHTML=this.formatresults()
return
}
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 (this.baseunit=="hours"){ //if base unit is hours, set "hourfield" to be topmost level
hourfield=dayfield*24+hourfield
dayfield="n/a"
}
else if (this.baseunit=="minutes"){ //if base unit is minutes, set "minutefield" to be topmost level
minutefield=dayfield*24*60+hourfield*60+minutefield
dayfield=hourfield="n/a"
}
else if (this.baseunit=="seconds"){ //if base unit is seconds, set "secondfield" to be topmost level
var secondfield=timediff
dayfield=hourfield=minutefield="n/a"
}
this.container.innerHTML=this.formatresults(dayfield, hourfield, minutefield, secondfield)
setTimeout(function(){thisobj.showresults()}, 1000) //update results every second
}

function formatresults(){
if (this.timesup==false){//if target date/time not yet met
var giorno1=Math.round(arguments[0]/10-((arguments[0]%10)/10));
var giorno2=arguments[0]%10;
var ora1=Math.round(arguments[1]/10-((arguments[1]%10)/10));
var ora2=arguments[1]%10;
var min1=Math.round(arguments[2]/10-((arguments[2]%10)/10));
var min2=arguments[2]%10;
var sec1=Math.round(arguments[3]/10-((arguments[3]%10)/10));
var sec2=arguments[3]%10;
var displaystring="<img src=\""+giorno1+".jpg\" width=\"30px\" height=\"30px\"/><img src=\""+giorno2+".jpg\" width=\"30px\" height=\"30px\"/><img src=\"vuoto.jpg\" width=\"30px\" height=\"30px\"/><img src=\""+ora1+".jpg\" width=\"30px\" height=\"30px\" style=\"position:relative; left:15px;\"/><img src=\""+ora2+".jpg\" width=\"30px\" height=\"30px\" style=\"position:relative; left:15px;\"/><img src=\"vuoto.jpg\" width=\"30px\" height=\"30px\"/><img src=\""+min1+".jpg\" width=\"30px\" height=\"30px\" style=\"position:relative; left:10px;\"/><img src=\""+min2+".jpg\" width=\"30px\" height=\"30px\" style=\"position:relative; left:10px;\"/><img src=\"vuoto.jpg\" width=\"30px\" height=\"30px\"/><img src=\""+sec1+".jpg\" width=\"30px\" height=\"30px\"/><img src=\""+sec2+".jpg\" width=\"30px\" height=\"30px\"/>"
//var displaystring="<img src=\""+giorno1+".jpg\">"arguments[0]+" days "+arguments[1]+" hours "+arguments[2]+" minutes "+arguments[3]+" seconds"
}
else{ //else if target date/time met
var displaystring="Future date is here!"
}
return displaystring
}