var seconden= 0;
var divid='';
function countdown(intodiv,tosec){
seconden = parseInt(tosec);
divid=intodiv;
window.setInterval("countdowndowndown()",1000);
}
function countdowndowndown() {
var txt="";
seconden = parseInt(seconden)-1;
deltaSecs = seconden;
var deltaDays=Math.floor(deltaSecs/86400); 
deltaSecs-=86400*deltaDays; 
txt+=deltaDays+" dagen, "; 
var deltaHours=Math.floor(deltaSecs/3600); 
deltaSecs-=3600*deltaHours; 
txt+=deltaHours+" uren, "; 
var deltaMins=Math.floor(deltaSecs/60); 
deltaSecs-=60*deltaMins; 

txt+=deltaMins+" minuten en "; 
txt+=deltaSecs+" seconden"; 
document.getElementById(divid).innerHTML=txt;
}