// PRELOAD BUTTONS
var arrow_ov = new Image();
arrow_ov.src = "assets/templates/default/images/buttons/arrow-ov.gif";

var demo_ov = new Image();
demo_ov.src = "assets/templates/default/images/buttons/demo-ov.gif";

var news_ov = new Image();
news_ov.src = "assets/templates/default/images/buttons/news-ov.gif";

var twitter_ov = new Image();
twitter_ov.src = "assets/templates/default/images/buttons/twitter-ov.gif";


// FUNCTIONS
$(document).ready(function() {
	var url = "http://twitter.com/status/user_timeline/calsci.json?count=5&include_rts=true&callback=?" ;
	var lastClass = "";
	$.getJSON(url,
		function(data){
			$.each(data, function(i, item) {
			// check for last tweet
			if (i == (data.length - 1)) {
				lastClass = "class='last'"
			}
			$("#twitter-content ul").append("<li " + lastClass + ">" + item.text.linkify().atify() + " <span class='created_at'>[" + relative_time(item.created_at) + " via " + item.source + "]</span></li>");
		});
	});

	$.get( "/blog/wp-content/themes/calsci/external-calsci.php", function(data) {
		$('#blog-content').append(data);
	});
	
	$("#sidebar ul li:last-child").addClass("last");
});

String.prototype.linkify = function() {
	return this.replace(/[A-Za-z]+:\/\/[A-Za-z0-9-_]+\.[A-Za-z0-9-_:%&\?\/.=]+/, function(m) {
		return m.link(m);
	});
};

String.prototype.atify = function() {
	return this.replace(/@[\w]+/g, function(m) {
		return "<a target='_blank' href='http://www.twitter.com/"+m.replace('@','')+"'>"+m+"</a>";
	});
};
  
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);

	var r = '';
	if (delta < 60) {
	  r = 'a minute ago';
	} else if(delta < 120) {
	  r = 'couple of minutes ago';
	} else if(delta < (45*60)) {
	  r = (parseInt(delta / 60)).toString() + ' minutes ago';
	} else if(delta < (90*60)) {
	  r = 'an hour ago';
	} else if(delta < (24*60*60)) {
	  r = '' + (parseInt(delta / 3600)).toString() + ' hours ago';
	} else if(delta < (48*60*60)) {
	  r = '1 day ago';
	} else {
	  r = (parseInt(delta / 86400)).toString() + ' days ago';
	}

	return r;
}

function twitter_callback ()
{
	return true;
}

function onclickClear( thisfield, defaulttext )
{
	if ( thisfield.value == defaulttext )
	{
		thisfield.value = "";
	}
}