function replaceURLWithHTMLLinks(text) {
	//replace links...
	var exp = /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;
	text = text.replace(exp,"<a href='$1' target='_blank'>$1</a>");
	//replace www's...
	var exp = /(\bwww\.[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;
	text = text.replace(exp,"<a href='http://$1' target='_blank'>$1</a>");

	return text;
}

var elapsedTime = function(createdAt) {
var ageInSeconds = (new Date().getTime() - new Date(createdAt).getTime()) / 1000;
var s = function(n) { return n == 1 ? '' : 's' };
if (ageInSeconds < 0) {
return 'just now';
}
if (ageInSeconds < 60) {
var n = ageInSeconds;
return n + ' second' + s(n) + ' ago';
}
if (ageInSeconds < 60 * 60) {
var n = Math.floor(ageInSeconds/60);
return n + ' minute' + s(n) + ' ago';
}
if (ageInSeconds < 60 * 60 * 24) {
var n = Math.floor(ageInSeconds/60/60);
return n + ' hour' + s(n) + ' ago';
}
if (ageInSeconds < 60 * 60 * 24 * 7) {
var n = Math.floor(ageInSeconds/60/60/24);
return n + ' day' + s(n) + ' ago';
}
if (ageInSeconds < 60 * 60 * 24 * 31) {
var n = Math.floor(ageInSeconds/60/60/24/7);
return n + ' week' + s(n) + ' ago';
}
if (ageInSeconds < 60 * 60 * 24 * 365) {
var n = Math.floor(ageInSeconds/60/60/24/31);
return n + ' month' + s(n) + ' ago';
}
var n = Math.floor(ageInSeconds/60/60/24/365);
return n + ' year' + s(n) + ' ago';
}

// Make date parseable in IE [Jon Aquino 2007-03-29]
function fixDate(d) {
    var a = d.split(' ');
    var year = a.pop();
    return a.slice(0, 3).concat([year]).concat(a.slice(3)).join(' ');
}

// Handles twitter call..
function twitterCallback(obj) {
    var html = '';
    for (var i = 0; i < obj.length; i++) {
      html += '<li>' + obj[i].text + ' (' + elapsedTime(fixDate(obj[i].created_at)) + ')</li>';
    }
    document.getElementById('twitter_list').innerHTML = replaceURLWithHTMLLinks(html);
}