$(function() {	
	var scrollable = getScrollElement('html','body');
	
	$('ul.faq li a').click(function(e) {
		e.preventDefault();
		var href = $(this).attr('href').replace('#', '');
		var position = $('dt a[name="' + href + '"]').offset();
		$(scrollable).animate({scrollTop: position.top}, 400);
	});
});


// Find the scrollable element - webkit = 'body', ff = 'html'
function getScrollElement(els) {
	for (var i = 0, argLength = arguments.length; i < argLength; i++) {
		var el = arguments[i], $scrollElement = $(el);
		if ($scrollElement.scrollTop() > 0) {
			return el;
		} 
		else {
			$scrollElement.scrollTop(1);
			var isScrollable = $scrollElement.scrollTop() > 0;
			$scrollElement.scrollTop(0);
			if (isScrollable) {
				return el;
			}
		}
	}
	return [];
}

function twitterCallback(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 class="clearfix"><span>'+status+'</span> <a class="date" href="http://twitter.com/'+username+'/statuses/'+twitters[i].id_str+'">'+relative_time(twitters[i].created_at)+'</a></li>');
  	}
  	document.getElementById('twitter-feed').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';
  	}
}