function roundPrice(num, rm) {
    num = Math.floor(num / rm) * rm;
    return num;
}

function formatPrice(num) {
    if (isNaN(num)) {
        num = 0;
    }
    var sgn = ((num < 0) ? '-' : '');
    num = Math.abs(num);
    var decs = Math.round(num * 100 % 100);
    if (decs < 10) {
        decs = ('0' + decs).substr(-2);
    }
    num = Math.floor(num) + '';
    if (num.length > 3) {
        h = num;
        num = '';
        for (j = 3; j < h.length; j += 3) {
            i = h.slice(h.length - j, h.length - j + 3);
            num = '&nbsp;' + i + num + '';
        }
        j = h.substr(0, (h.length % 3 == 0) ? 3 : (h.length % 3));
        num = j + num;
    }
    if (num) {
        return '' + sgn + num + ',' + decs + '&nbsp;kr';
    } else {
        return '0,00&nbsp;kr';
    }
}