function cdLocalTime(container, offsetMinutes, targetdate,ltime){
if (!document.getElementById || !document.getElementById(container)) return;
this.container=document.getElementById(container);
this.localtime=this.serverdate=new Date(ltime);
this.targetdate=new Date(targetdate);
this.timesup=false;
this.localtime.setTime(this.serverdate.getTime()+offsetMinutes*60*1000);
this.updateTime();
}

cdLocalTime.prototype.updateTime=function(){
var thisobj=this;
this.localtime.setSeconds(this.localtime.getSeconds()+1);
setTimeout(function(){thisobj.updateTime()}, 1000);
}

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

cdLocalTime.prototype.showresults=function(){
var thisobj=this;
var timediff=(this.targetdate-this.localtime)/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));

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 displaystring="<b>"+arguments[0]+"d "+arguments[1]+"h "+arguments[2]+"m "+arguments[3]+"s</b>"
}
else{ //else if target date/time met
var displaystring="<b><font color=red>Closed!</font></b>"
}
return displaystring
}