function calcprice(){
	
	u = parseInt($F('numberofusers'));
	if (u < 1){
		u = 1;
	}
	a = parseInt($F('archivelength'));
	d = parseInt($F('duration'));
	
	ad = 1.0;
	switch (a){
		case 1:
			ad = 1.2;
			break;
		case 3:
			ad = 1.3;
			break;
		case 6:
			ad = 1.4;
			break;
		case 12:
			ad = 1.55;
			break;
		case 24:
			ad = 1.8;
			break;
		case 36:
			ad = 2.0;
			break;
		case 72:
			ad = 2.5;
			break;
	}
	dd = 1.0;
	switch (d){
		case 24:
			dd = 0.85;
			break;
		case 36:
			dd = 0.7;
			break;
		case 72:
			dd = 0.55;
			break;
	}
	
	var priceperyear = (dd * ad * (2024.0/u+9.0+120.0*(800.0/(800.0+u))));
	
	//$('priceperday').innerHTML = (priceperyear / 365).toFixed(2) + ' kkr';

	$('priceperday').replace('<div id="priceperday" style="font-size: 11px;">' + (priceperyear / 365).toFixed(2) + ' kr</div>');
	$('pricepermonth').replace('<div id="pricepermonth" style="font-size: 11px;">' + (u * priceperyear / 12).toFixed(2) + ' kr</div>');
        $('priceperyear').replace('<div id="priceperyear" style="font-size: 11px;">' + Math.round(u * priceperyear)+ '.00 kr</div>');
        $('pricetotal').replace('<div id="pricetotal" style="font-size: 11px;font-weight:bold;">' + Math.round(u * priceperyear * (d / 12)) + '.00 kr</div>');
       
}