// Set Flags for support (DD)

var FLAGS = {
		w3c: function() {
			return !!(document.getElementById && document.createElement);
		}(),
		ie: function() {
			// Returns correct version
			var jscript/*@cc_on=@_jscript_version@*/;
			return !!jscript;
		}(),
		opera: function() {
			return !!window.opera;
		}(),
		screenReader: function() {
			return false;/* Overwrite if present via flashAid */
		}()
};
	
function insertAfter(parent, node, referenceNode) {
  parent.insertBefore(node, referenceNode.nextSibling);
}

function addEvent( obj, type, fn ) {
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
		EventCache.add(obj, type, fn);
	}
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
		EventCache.add(obj, type, fn);
	}
	else {
		obj["on"+type] = obj["e"+type+fn];
	}
}

var EventCache = function(){
	var listEvents = [];
	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
		},
		flush : function(){
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1){
				item = listEvents[i];
				if(item[0].removeEventListener){
					item[0].removeEventListener(item[1], item[2], item[3]);
				};
				if(item[1].substring(0, 2) != "on"){
					item[1] = "on" + item[1];
				};
				if(item[0].detachEvent){
					item[0].detachEvent(item[1], item[2]);
				};
				item[0][item[1]] = null;
			};
		}
	};
}();
addEvent(window,'unload',EventCache.flush);

function stopEvent(event) {
	if (event.preventDefault) {
		event.preventDefault();
		event.stopPropagation();
	} else {
		event.returnValue = false;
		event.cancelBubble = true;
	}
}

function $(element) {
	if (arguments.length > 1) {
		for (var i = 0, elements = [], length = arguments.length; i < length; i++) elements.push($(arguments[i]));
		return elements;
	}
	if (typeof element == 'string') element = document.getElementById(element);
	return element;
}

/* getElementsByClassName - Robert Nyman */
function getElementsByClassName(className, tag, elm){
	var testClass = new RegExp("(^|\\s)" + className + "(\\s|$)");
	var tag = tag || "*";
	var elm = elm || document;
	var elements = (tag == "*" && elm.all)? elm.all : elm.getElementsByTagName(tag);
	var returnElements = [];
	var current;
	var length = elements.length;
	for(var i=0; i<length; i++){
		current = elements[i];
		if(testClass.test(current.className)){
			returnElements.push(current);
		}
	}
	return returnElements;
}


//ADDED by JP as statstag is not present in the decorator
var playerWindowProps = 'height=730,width=430';

function openPlayer(props,s) {
	// see if the props has more than one param, if so, write the link to AuthUser instead
	var url = "/player/v2/player.jsp?";
	if (props.indexOf("&") > -1)
	{
		if(s) {
		
		} else {
		url = "/player/authorised/AuthUser.jsp?";
		}
	}
	window.open(url+props,'c4Player',playerWindowProps);
	return;
}

function openPlayerWindow(url) {
	window.open(url,'c4Player',playerWindowProps);
	return;
}

// Added AB: Open external links in new window - note disabled if FLAGS.screenReader == true
	function externalLinks(newWindow) {
		if(FLAGS.screenReader || !FLAGS.w3c) { return; }
		var anchors, l;
 		anchors = document.getElementsByTagName("a");
		l = anchors.length;
 			for (var i=0; i<l; i++) {
   				var anchor = anchors[i];
   				if (anchor.getAttribute("href") && anchor.getAttribute("rel") === "external") {
					// Behaviour
					if (typeof newWindow != "undefined") {
							anchor.target = "_blank";
							if (typeof anchor.title != "undefined") anchor.title = "Opens in a new window";
							}
					// Hook for styling
					anchor.className += (anchor.className == '' ? '' : ' ') + 'external';
					}
 			}
		}