// When the document is loaded (jQuery function) 
$(document).ready(function() { 
	// Call the Twitter API to retrieve the last 10 tweets in JSON format for the pcpro Twitter account 
	$.getJSON("http://twitter.com/statuses/user_timeline.json?screen_name=ab_and_beyond&count=1&callback=?", function(tweetdata) { 
		// Grab a reference to the ul element which will display the tweets 
		var tl = $("#tweet-list"); 
		// For each item returned in tweetdata 
		$.each(tweetdata, function(i,tweet) { 
			// Append the info in li tags to the ul, converting any links to HTML <a href=.. code and convert the tweeted date 
			// to a more readable Twitter format 
			tl.append("<li>" + urlToLink(tweet.text) + "<br />" + relTime(tweet.created_at) + "</li>");
		});
	});
}); 
// Converts any links in text to their HTML <a href=""> equivalent 
function urlToLink(text) { 
	var exp = /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig; return text.replace(exp,"<a href='$1' onclick=\"this.target='_blank';\">$1</a>"); } 
	// Takes a time value and converts it to "from now" and then returns a relevant text interpretation of it 
	function relTime(time_value) { 
		time_value = time_value.replace(/(\+[0-9]{4}\s)/ig,"");
		var parsed_date = Date.parse(time_value);
		var relative_to = (arguments.length > 1) ? arguments[1] : new Date(); var timeago = parseInt((relative_to.getTime() - parsed_date) / 1000);
		if (timeago < 60)
			return 'less than a minute ago'; 
		else if(timeago < 120)
			return 'about a minute ago'; 
		else if(timeago < (45*60))
			return (parseInt(timeago / 60)).toString() + ' minutes ago'; 
		else if(timeago < (90*60))
			return 'about an hour ago';
		else if(timeago < (24*60*60))
			return 'about ' + (parseInt(timeago / 3600)).toString() + ' hours ago';
		else if(timeago < (48*60*60))
			return '1 day ago';
		else
			return (parseInt(timeago / 86400)).toString() + ' days ago';
}