function writeTime(millis, divisor, name)
{
    var i = Math.floor(millis / divisor);
    if (i == 1) 
	document.write("a " + name);
    else
	document.write(i + " " + name + "s");
}

function writePostTime(date)
{
    var today = new Date;
    var millis = today.getTime() - date;
    var second = 1000;
    var minute = 60 * second;
    var hour = minute * 60;
    var day = hour * 24;

    document.write("Posted ");
    if (millis > day) {
	writeTime(millis, day, "day");
    }
    else if (millis > hour) {
	writeTime(millis, hour, "hour");
    }
    else {
	writeTime(millis, minute, "minute");
    }
    document.write(" ago");
};