// When the document is loaded (jQuery function)
		$(document).ready(function() {
								   
			// Enable caching
  			$.ajaxSetup({ cache: true });
			
			// Call the Twitter API to retrieve the last 6 tweets in JSON format for the 321 Collective Twitter account
			$.getJSON("http://twitter.com/statuses/user_timeline.json?screen_name=321collective&count=6&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 /><span class=tweet-list-time>" + relTime(tweet.created_at) + "</span></li>");
				
				});
				
				$("ul#tweet-list").slideDown(1000);
				
				// give last list item a special class
				$("ul#tweet-list li:last").addClass("lastTweet");
			});
		});

		// 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'>$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';
		}