function relativeTime(pastTime) {
				
	var origStamp = Date.parse(pastTime);
	var curDate = new Date();
	var currentStamp = curDate.getTime();
	var difference = parseInt((currentStamp - origStamp)/1000);
				
	if(difference < 0) return false;
				
	if(difference <= 5)			return "Just now";
	if(difference <= 20)			return "Seconds ago";
	if(difference <= 60)			return "A minute ago";
	if(difference < 3600)		return parseInt(difference/60)+" minutes ago";
	if(difference <= 1.5*3600) 	return "One hour ago";
	if(difference < 23.5*3600)	return Math.round(difference/3600)+" hours ago";
	if(difference < 1.5*24*3600)	return "One day ago";
				
	// If the tweet is older than a day, show an absolute date/time value;
				
	var dateArr = pastTime.split(' ');
				
	return dateArr[4].replace(/\:\d+$/,'')+' '+dateArr[2]+' '+dateArr[1]+
	(dateArr[3]!=curDate.getFullYear()?' '+dateArr[3]:'');
}