var postgrad =
{
	postgrad_home_tools :
	{
		init : function()
		{
			$('#postgrad-home-fade').innerfade({
				animationtype: 'fade',
				speed: 'slow',
				timeout: 10000,
				type: 'random_start',
				containerheight: '302px'
			}).nextAll().css("display","block"); 
		}
	}
}

$(document).ready(function(){
	// MAIN MENU SEARCH
	
	// remove default text
	$("#home_search_q").focus(function () {
		$(this).val('');
	});
	
	
	// reset the value to "Course search..." if nothing was entered
	$("#home_search_q").blur(function () {
		if($(this).val() == '')
			$(this).val('Course search...');
	});
	
	// listen for the 'enter' key being press, and submit the query when detected
	$("#home_search_q").bind("keypress", function(e) {
		if (e.keyCode == 13) {
			document.location = '/postgraduate-engineering-courses?q=' + $('#home_search_q').val(); 
		}
	});
	
	// make the search button submit the query
	$('a#home_search_submit').click(function(e) {
		e.preventDefault();
		document.location = '/postgraduate-engineering-courses?q=' + $('#home_search_q').val(); 
	});
	
	$('#mypgc-favourites a[rel]').each(function()
	{
		$(this).click(function() {
			$.get("/ajax-scripts/delete-favourite.php", { id: $(this).attr("rel") });
			$(this).parent().parent().fadeOut(300, function(){ 
			    $(this).remove();
				if($('#mypgc-favourites tr').size() == 0)
				{
					$('#mypgc-favourites').after("<p><em>You don't currently have any favourite courses set.</em></p>");
				}
			});
			return false;
		});	
	});
	
	$('#mypgc-reminders a[rel]').each(function()
	{
		$(this).click(function() {
			$.get("/ajax-scripts/delete-reminder.php", { id: $(this).attr("rel") });
			$(this).parent().parent().fadeOut(300, function(){ 
			    $(this).remove();
				if($('#mypgc-reminders tr').size() == 0)
				{
					$('#mypgc-reminders').after("<p><em>You don't currently have any reminders set.</em></p>");
				}
			});
			return false;
		});	
	});
});


function twitterCallback2(twitters) {
  var statusHTML = [];
  for (var i=0; i<twitters.length; i++){
    var username = twitters[i].user.screen_name;
    var status = twitters[i].text.replace(/((https?|s?ftp|ssh)\:\/\/[^"\s\<\>]*[^.,;'">\:\s\<\>\)\]\!])/g, function(url) {
      return '<a href="'+url+'">'+url+'</a>';
    }).replace(/\B@([_a-z0-9]+)/ig, function(reply) {
      return  reply.charAt(0)+'<a href="http://twitter.com/'+reply.substring(1)+'">'+reply.substring(1)+'</a>';
    });
    statusHTML.push('<li><span>'+status+'</span> <br /><a style="font-size:85%" href="http://twitter.com/'+username+'/statuses/'+twitters[i].id+'">'+relative_time(twitters[i].created_at)+'</a></li>');
  }
  document.getElementById('twitter_update_list').innerHTML = statusHTML.join('');
}

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';
  }
}