
		//twitter time
		function relative_time(time_value) {
				var values = time_value.split(" ");
				time_value = values[1] + " " + values[2] + ", " + values[5] + " " + values[3];
				var parsed_date = Date.parse(time_value);
				var relative_to = (arguments.length > 1) ? arguments[1] : new Date();
				var delta = parseInt((relative_to.getTime() - parsed_date) / 1000);
				delta = delta + (relative_to.getTimezoneOffset() * 60);
			
				if (delta < 60) {
					return 'less than a minute ago';
				} else if(delta < 120) {
					return 'about a minute ago';
				} else if(delta < (60*60)) {
					return (parseInt(delta / 60)).toString() + ' minutes ago';
				} else if(delta < (120*60)) {
					return 'about an hour ago';
				} else if(delta < (24*60*60)) {
					return 'about ' + (parseInt(delta / 3600)).toString() + ' hours ago';
				} else if(delta < (48*60*60)) {
					return '1 day ago';
				} else {
					return (parseInt(delta / 86400)).toString() + ' days ago';
				}
			}
  	$(document).ready( function() {
			//load twitter feed -- jquerified original code from http://twitter.com/javascripts/blogger.js
			$.getJSON("https://api.twitter.com/1/statuses/user_timeline.json?screen_name=USCLibraries&count=1&include_rts=1&callback=?", 
					function(tweets) {
						var statusHTML = [];
						$.each(tweets, function(i) {
							var username = tweets[i].user.screen_name;
							var status = tweets[i].text.replace(/((https?|s?ftp|ssh)\:\/\/[^"\s\<\>]*[^.,;'">\:\s\<\>\)\]\!])/g,function(url) {
								return '<a href="'+url+'" target="_blank">'+url+'</a>';
							}).replace(/\B@([_a-z0-9]+)/ig, function(reply) {
								return reply.charAt(0)+'<a href="http://twitter.com/'+reply.substring(1)+'" target="_blank">'+reply.substring(1)+'</a>';
							}).replace(/\B#([_a-z0-9]+)/ig, function(hashtag) {
								return '<a href="http://twitter.com/search?q=%23'+hashtag.substring(1)+'" target="_blank">'+hashtag.charAt(0)+hashtag.substring(1)+'</a>';
							});
							statusHTML.push('<li><span>'+status+'</span> <span style="font-size:85%"><a href="http://twitter.com/'+username+'/status/'+tweets[i].id_str+'" target="_blank"><em>('+relative_time(tweets[i].created_at)+')</em></a> <a class="reply" href="http://twitter.com/intent/tweet?in_reply_to='+tweets[i].id_str+'">Reply</a> <a class="retweet" href="http://twitter.com/intent/retweet?tweet_id='+tweets[i].id_str+'">Retweet</a></span></li>');
						});
						$('#twitter_update_list').html(statusHTML.join(''));
					});
		});
