/*	EventCache Version 1.0

	Provides a way for automagically removing events from nodes and thus preventing memory leakage.
	See <http://novemberborn.net/javascript/event-cache> for more information.
*/

/*	Implement array.push for browsers which don't support it natively.
	Please remove this if it's already in other code */
if(Array.prototype.push == null){
	Array.prototype.push = function(){
		for(var i = 0; i < arguments.length; i++){
			this[this.length] = arguments[i];
		};
		return this.length;
	};
};

/*	Event Cache uses an anonymous function to create a hidden scope chain.
	This is to prevent scoping issues. */
var EventCache = function(){
	var listEvents = [];
	
	return {
		listEvents : listEvents,
	
		add : function(node, sEventName, fHandler, bCapture){
			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]);
				};
				
				/* From this point on we need the event names to be prefixed with 'on" */
				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;
			};
		}
	};
}();


/* flyout menu controls */
function addEvent(elm, evType, fn, useCapture) {
  // cross-browser event handling for IE5+, NS6 and Mozilla
  // By Scott Andrew
  if (elm.addEventListener) {
    elm.addEventListener(evType, fn, useCapture);
    return true;
  } else if (elm.attachEvent) {
    var r = elm.attachEvent('on' + evType, fn);
    EventCache.add(elm, evType, fn);
    return r;
  } else {
    elm['on' + evType] = fn;
  }
}

addEvent(window, 'unload', EventCache.flush, false);

function init() {
  var uls = document.getElementsByTagName('ul');
  for (var u = 0; u < uls.length; u++) {
    if (uls[u].className.search(/\bsiteselect\b/) == -1) continue;
    var lis = uls[u].getElementsByTagName('li');
    for (var i = 0; i < lis.length; i++) {
      var node = lis[i];
      if (node.nodeName.toLowerCase() == 'li' &&
          node.getElementsByTagName('ul').length > 0) {
        addEvent(node, 'mouseover', getMoverFor(node), false);
        addEvent(node, 'mouseout', getMoutFor(node), false);
        node.getElementsByTagName('a')[0].className += ' subheader';
      }
    }
  }
}

addEvent(window, 'load', init, false);

function getMoverFor(node) {
  return function(e) { mover(e, node); };
}

function getMoutFor(node) {
  return function(e) { mout(e, node); };
}

function mover(e, targetElement) {
  var el = window.event ? targetElement : e ? e.currentTarget : null;
  if (!el) return;
  clearTimeout(el.outTimeout);
  for (var i = 0; i < el.childNodes.length; i++) {
    var node = el.childNodes[i];
    if (node.nodeName.toLowerCase() == 'ul') {
      node.style.display = 'block';
    }
  }
}

function mout(e, targetElement) {
  var el = window.event ? targetElement : e ? e.currentTarget : null;
  if (!el) return;
  el.outTimeout = setTimeout(function() { mout2(el); }, 100);
}

function mout2(el) {
  for (var i = 0; i < el.childNodes.length; i++) {
    var node = el.childNodes[i];
    if (node.nodeName.toLowerCase() == 'ul') {
      node.style.display = 'none';
    }
  }
}