var xhr_file = '/_compile/a_news-archive.php';
var xhr_type = 'GET';
var exlude_hash = 'contact-form';

var g_className_links = 'select';
var g_className_update = 'update';
var g_container_id = 'container';
var g_cookie_name = 'news_hash';

function news_xhr_setup() {
	if(!document.createElement || !document.getElementsByTagName || !document.getElementById) return false;
		
	var container 			= document.getElementById(g_container_id);
	var list_select_array 	= getElementsByClassName(container,'*',g_className_links);
	var list_links_array 	= getElementsByClassName(container,'*',g_className_update);
	var list_select			= list_select_array[0];
	var list_links 			= list_links_array[0];
	
	if(!container || !hasClass(container,'module-news') || !list_select || !list_links) return false;
	
	if(window.watch) window.watch('location',news_xhr_setup);
	
	news_xhr_connection = XHConn(); // all the elements we need, then setup the connection
	if(!news_xhr_connection) return false; // XMLHTTP not available. exit method/handle error.

	var month_list_array = list_select.getElementsByTagName('a');
	var month_list_array_length = month_list_array.length;
	
	for(var i=0; i<month_list_array_length; i++) {	
		var month_anchor = month_list_array[i];
		var month_anchor_id = month_anchor.href.split('/')[5]+'-'+month_anchor.href.split('/')[6];
		month_anchor.href = '#'+month_anchor_id;
		addEvent(month_anchor,'click',news_xhr_connect);

		//if(getCookie(g_cookie_name)) var first_anchor_id = getCookie(g_cookie_name);
		//else if(i==0) var first_anchor_id = month_anchor_id;
		var first_anchor_id = month_anchor_id;
		
		var location_hash = location.href.split('#')[1];
		if(!location_hash) location.href += '#'+first_anchor_id;
	}
	
	current_hash = news_xhr_setup_default(location_hash); // page loads, if has hash, look to element with that link, set active and call the connection
	
	// loop to check whether the current hash has changed, if so change based upon hash
	window.setInterval(function(a,b) {
		var check_hash = location.href.split('#')[1];
		if(check_hash && current_hash!=check_hash && check_hash!=exlude_hash) {
			current_hash = news_xhr_setup_default();
		}
	}, 100);
}

// the default setup of the script, based upon hash
// also has the ability to simulate history
function news_xhr_setup_default(current_hash) {
	var container 			= document.getElementById(g_container_id);
	var list_select_array 	= getElementsByClassName(container,'*',g_className_links);
	var list_links_array 	= getElementsByClassName(container,'*',g_className_update);
	var list_select			= list_select_array[0];
	var list_links 			= list_links_array[0];
	
	var month_list_array = list_select.getElementsByTagName('a');
	var month_list_array_length = month_list_array.length;
	
	var location_hash = location.href.split('#')[1];
	if(!location_hash) return null;
	
	//if(current_hash==location_hash || location_hash==exlude_hash) return location_hash;

	for(var i=0; i<month_list_array_length; i++) {
		var month_anchor = month_list_array[i];
		removeClass(month_anchor.parentNode,'active'); // remove the active from all
		if(month_anchor.href.split('#')[1].toLowerCase().match(location_hash)) {
			addClass(month_anchor.parentNode,'active'); // add class to active page
		}
	}
		
	// need the loading
	xhr_loading(list_links);
	
	// setup connection, call the xhr
	news_xhr_connection.connect(xhr_file,xhr_type,'news='+location_hash,news_xhr_build);
	return location_hash;
}

function news_xhr_connect(e) {
	var container 			= document.getElementById(g_container_id);
	var list_select_array 	= getElementsByClassName(container,'*',g_className_links);
	var list_links_array 	= getElementsByClassName(container,'*',g_className_update);
	var list_select			= list_select_array[0];
	var list_links 			= list_links_array[0];
	
	var month_list_array = list_select.getElementsByTagName('a');
	var month_list_array_length = month_list_array.length;
	
	for(var i=0; i<month_list_array_length; i++) {
		removeClass(month_list_array[i].parentNode,'active'); // loop and remove 'active' from all the list items
	}
	
	addClass(this.parentNode,'active'); // add the class 'active' to the list item
	var anchor_id = this.href.split('#')[1];
	var location_id = location.href.split('#')[1];
	if(anchor_id==location_id) {
		this.blur();
		return false;
	}

	news_xhr_setup_default(anchor_id);
	this.blur();
}

function news_xhr_build(oXML) {
	//alert(oXML.responseText);
	if(!oXML.responseXML) return false;
	var xml_container	= oXML.responseXML.getElementsByTagName('news');
	var xml_error		= oXML.responseXML.getElementsByTagName('error');

	var container 			= document.getElementById(g_container_id);
	var list_select_array 	= getElementsByClassName(container,'*',g_className_links);
	var list_links_array 	= getElementsByClassName(container,'*',g_className_update);
	var list_select			= list_select_array[0];
	var list_links 			= list_links_array[0];

	removeChildren(list_links);
	
	xml_container_length = xml_container.length;
	
	if(xml_container_length>0) {
		var el_ul = document.createElement('ul');
		for(var i=0; i<xml_container_length; i++) {
			var container 	= xml_container[i];
			var el_title 	= container.getElementsByTagName('title')[0].firstChild.nodeValue;
			var el_url 		= container.getElementsByTagName('url')[0].firstChild.nodeValue;

			var el_title_text = document.createTextNode(el_title);
			
			var el_li 	= document.createElement('li');
			var el_a	= document.createElement('a');
			
			addClass(el_li,'hentry');
			addClass(el_a,'entry-title');
			addRel(el_a,'permalink');
			
			el_a.href = el_url;
			el_a.appendChild(el_title_text);			
			el_li.appendChild(el_a);
			el_ul.appendChild(el_li);
		}
		list_links.appendChild(el_ul);
		
		// set a cookie of the current hash, so when the come back
		var location_hash = location.href.split('#')[1];
		setCookie(g_cookie_name, location_hash, '', '/');
	}
	else {		
		create_general_feedback(list_links,xml_error,'error');
	}
}
addEvent(window,'load',news_xhr_setup);