/**
 * @author 3zero Ltd
 * @copyright 2009 all rights reserved
 */

 
/**
 * dropDownMenu v0.3
 * An easy to implement dropDown Menu for Websites, that may be based on styled list tags
 *
 * Works for IE 5.5+ PC, Mozilla 1+ all Plattforms, Opera 7+
 *
 * Copyright (c) 2004 Knallgrau New Medias Solutions GmbH, Vienna - Austria
 *
 * Written by Matthias Platzer at http://knallgrau.at
 * 
 * Use it as you need it
 * It is distributed under a BSD style license
 */

userAgent = navigator.userAgent.toLowerCase();
isIE     = ((userAgent.indexOf("msie") != -1) && (userAgent.indexOf("opera") == -1));
isOpera  = (userAgent.indexOf("opera") != -1);
isMac     = (userAgent.indexOf("mac") != -1);
isMacIE = (isIE && isMac);
isWinIE = (isIE && !isMac);
isSafari = (userAgent.indexOf("safari") != -1);
isGecko  = (navigator.product == "Gecko" && !isSafari);

/**
 * Container Class (Prototype) for the dropDownMenu
 * 
 * @param idOrElement     String|HTMLElement  root Node of the menu (ul)
 * @param name            String              name of the variable that stores the result
 *                                            of this constructor function
 * @customConfigFunction  Function            optional config function to override the default settings
 *                                            for an example see Menu.prototype.config
 */
function Menu(idOrElement, name, customConfigFunction) {
  this.author = "Matthias Platzer AT knallgrau.at";
  this.copyright = "Copyright (c) 2004 Knallgrau New Medias Solutions GmbH, Vienna - Austria";
  this.license = "distributed under a BSD-Style license";

  this.lastUpdate = "2004-11-08";
  this.version = "0.4";

  this.name = name;
  this.type = "menu";
  this.closeDelayTimer = null;
  this.closingMenuItem = null; 

  this.config();
  if (typeof customConfigFunction == "function") {
    this.customConfig = customConfigFunction;
    this.customConfig();
  }

  this.rootContainer = new MenuContainer(idOrElement, this);
}

Menu.prototype.config = function() {
  this.collapseBorders = true;
  this.quickCollapse = true;
  this.closeDelayTime = 500;
};

function MenuContainer(idOrElement, parent) {
  this.type = "menuContainer";
  this.menuItems = [];
  this.init(idOrElement, parent);
}

MenuContainer.prototype.init = function(idOrElement, parent) {
  this.element = (typeof idOrElement == "string") ? document.getElementById(idOrElement) : idOrElement;
  this.parent = parent;
  this.parentMenu = (this.type == "menuContainer") ? ((parent) ? parent.parent : null) : parent;
  this.root = parent instanceof Menu ? parent : parent.root;
  this.id = this.element.id;

  if (this.type == "menuContainer") {
    if (this.hasClass("dropdown")) this.menuType = "dropdown";
    else if (this.hasClass("flyout")) this.menuType = "flyout";
    else if (this.hasClass("horizontal")) this.menuType = "horizontal";
    else this.menuType = "standard";
    if (this.menuType == "flyout" || this.menuType == "dropdown") {
      this.isOpen = false;
      this.element.style.position = "absolute";
      this.element.style.top = "0px";
      this.element.style.left = "0px"; 
      this.element.style.visibility = "hidden";
    } else {
      this.isOpen = true;
    }
  } else {
    this.isOpen = this.parentMenu.isOpen;
  }

  var childNodes = this.element.childNodes;
  if (childNodes == null) return;
  
  for (var i = 0; i < childNodes.length; i++) {
    var node = childNodes[i];
    if (node.nodeType == 1) {
      if (this.type == "menuContainer") {
        if (node.tagName.toLowerCase() == "li") {
          this.menuItems.push(new MenuItem(node, this));
        }
        
      } else {
        if (node.tagName.toLowerCase() == "ul") {
          this.subMenu = new MenuContainer(node, this);
        }
      }
    }
  }
};

MenuContainer.prototype.getAbsOffsetTop = function() {
  var offset = 0;
  var ele = this.element;
  var sl = (window.pageYOffset ? window.pageYOffset : document.body.scrollTop);
  do { offset += ele.offsetTop; ele = ele.offsetParent; } while (ele!=null && ele.style.position !="relative" && ele.style.position!="absolute" && (ele.style.position!="fixed"))
  return offset;
};

MenuContainer.prototype.getAbsOffsetLeft = function() {
  var offset = 0; 
  var ele = this.element;
  var sl = (window.pageXOffset ? window.pageXOffset : document.body.scrollLeft);
  do { offset += ele.offsetLeft; if (ele.style.position=='fixed') { offset+=sl }; ele = ele.offsetParent; } while (ele!=null)
  return offset;
};

MenuContainer.prototype.hasClass = function(className) {
  return (" " + this.element.className + " ").indexOf(className) > -1;
};

MenuContainer.prototype.getBorders = function(element) {
  var ltrb = ["Left","Top","Right","Bottom"];
  var result = {};
  for (var i in ltrb) {
    if (this.element.currentStyle)
      var value = parseInt(this.element.currentStyle["border"+ltrb[i]+"Width"]);
    else if (window.getComputedStyle)
      var value = parseInt(window.getComputedStyle(this.element, "").getPropertyValue("border-"+ltrb[i].toLowerCase()+"-width"));
    else
      var value = parseInt(this.element.style["border"+ltrb[i]]);
    result[ltrb[i].toLowerCase()] = isNaN(value) ? 0 : value;
  }
  return result;
};

MenuContainer.prototype.open = function() {
  if (this.root.closeDelayTimer) window.clearTimeout(this.root.closeDelayTimer);
  this.parentMenu.closeAll(this);
  this.element.style.visibility = "visible";
  this.isOpen = true;
  if (this.menuType == "dropdown") {
    this.element.style.top = (this.parent.getAbsOffsetTop() + this.parent.element.offsetHeight) + "px";
    this.element.style.left = (this.parent.element.offsetLeft) + "px";
  } else if (this.menuType == "flyout") {
    var parentMenuBorders = this.parentMenu ? this.parentMenu.getBorders() : new Object();
    var thisBorders = this.getBorders();
    if (
      (this.parentMenu.getAbsOffsetLeft() + this.parentMenu.element.offsetWidth + this.element.offsetWidth + 20) > 
      (window.innerWidth ? window.innerWidth : document.body.offsetWidth)
    ) {
      this.element.style.left = (- this.element.offsetWidth - (this.root.collapseBorders ?  0 : parentMenuBorders["left"])) + "px";
    } else {
      this.element.style.left = (this.parentMenu.element.offsetWidth - parentMenuBorders["left"] - (this.root.collapseBorders ?  Math.min(parentMenuBorders["right"], thisBorders["left"]) : 0)) + "px";      
    }
    this.element.style.top = (this.parent.element.offsetTop - parentMenuBorders["top"] - this.menuItems[0].element.offsetTop) + "px";
  }
};

MenuContainer.prototype.close = function() {
  this.element.style.visibility = "hidden";
  this.isOpen = false;
  this.closeAll();
};

MenuContainer.prototype.closeAll = function(trigger) {
  for (var i in this.menuItems) { 
    this.menuItems[i].closeItem(trigger);
  }
};

MenuItem.prototype = MenuContainer.prototype;
function MenuItem(idOrElement, parent) {
  var menuItem = this;
  this.type = "menuItem";
  this.subMenu;
  this.init(idOrElement, parent);
  if (this.subMenu) {
    this.element.onmouseover = function() {
      menuItem.subMenu.open(); 
    }
  } else {
    if (this.root.quickCollapse) {
      this.element.onmouseover = function() {
        menuItem.parentMenu.closeAll(); 
      }
    }
  }
  var linkTag = this.element.getElementsByTagName("A")[0];
  if (linkTag) {
     linkTag.onfocus = this.element.onmouseover;
     this.link = linkTag;
     this.text = linkTag.text;
  }
  if (this.subMenu) {
    this.element.onmouseout = function() {
      if (menuItem.root.openDelayTimer) window.clearTimeout(menuItem.root.openDelayTimer);
      if (menuItem.root.closeDelayTimer) window.clearTimeout(menuItem.root.closeDelayTimer); 
      eval(menuItem.root.name + ".closingMenuItem = menuItem");
      menuItem.root.closeDelayTimer = window.setTimeout(menuItem.root.name + ".closingMenuItem.subMenu.close()", menuItem.root.closeDelayTime); 
    }
  }
}

MenuItem.prototype.openItem = function() {
  this.isOpen = true;
  if (this.subMenu) { this.subMenu.open(); }
};

MenuItem.prototype.closeItem = function(trigger) {
  this.isOpen = false;
  if (this.subMenu) { 
    if (this.subMenu != trigger) this.subMenu.close(); 
  }
};

// DEBUG

Menu.prototype.toString = function() {
   return "Menu";
}

Menu.prototype.trace = function() {
   return "root";
}

MenuContainer.prototype.toString = function() {
   return "y:"+this.getAbsOffsetTop();
}

MenuContainer.prototype.trace = function() {
   // return this.element.outerHTML.substring(0,40);
   return this;
   return (this.parent ? this.parent.trace() : "x") + " > " + this;
}

function trace(msg) {
  var ele = document.getElementById("trace");
  ele.value = msg + "\n" + ele.value;
}

/*
 * Date Format 1.2.2
 * (c) 2007-2008 Steven Levithan <stevenlevithan.com>
 * MIT license
 * Includes enhancements by Scott Trenda <scott.trenda.net> and Kris Kowal <cixar.com/~kris.kowal/>
 *
 * Accepts a date, a mask, or a date and a mask.
 * Returns a formatted version of the given date.
 * The date defaults to the current date/time.
 * The mask defaults to dateFormat.masks.default.
 */
var dateFormat = function () {
	var	token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g,
		timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g,
		timezoneClip = /[^-+\dA-Z]/g,
		pad = function (val, len) {
			val = String(val);
			len = len || 2;
			while (val.length < len) val = "0" + val;
			return val;
		};

	// Regexes and supporting functions are cached through closure
	return function (date, mask, utc) {
		var dF = dateFormat;

		// You can't provide utc if you skip other args (use the "UTC:" mask prefix)
		if (arguments.length == 1 && (typeof date == "string" || date instanceof String) && !/\d/.test(date)) {
			mask = date;
			date = undefined;
		}

		// Passing date through Date applies Date.parse, if necessary
		date = date ? new Date(date) : new Date();
		if (isNaN(date)) throw new SyntaxError("invalid date");

		mask = String(dF.masks[mask] || mask || dF.masks["default"]);

		// Allow setting the utc argument via the mask
		if (mask.slice(0, 4) == "UTC:") {
			mask = mask.slice(4);
			utc = true;
		}

		var	_ = utc ? "getUTC" : "get",
			d = date[_ + "Date"](),
			D = date[_ + "Day"](),
			m = date[_ + "Month"](),
			y = date[_ + "FullYear"](),
			H = date[_ + "Hours"](),
			M = date[_ + "Minutes"](),
			s = date[_ + "Seconds"](),
			L = date[_ + "Milliseconds"](),
			o = utc ? 0 : date.getTimezoneOffset(),
			flags = {
				d:    d,
				dd:   pad(d),
				ddd:  dF.i18n.dayNames[D],
				dddd: dF.i18n.dayNames[D + 7],
				m:    m + 1,
				mm:   pad(m + 1),
				mmm:  dF.i18n.monthNames[m],
				mmmm: dF.i18n.monthNames[m + 12],
				yy:   String(y).slice(2),
				yyyy: y,
				h:    H % 12 || 12,
				hh:   pad(H % 12 || 12),
				H:    H,
				HH:   pad(H),
				M:    M,
				MM:   pad(M),
				s:    s,
				ss:   pad(s),
				l:    pad(L, 3),
				L:    pad(L > 99 ? Math.round(L / 10) : L),
				t:    H < 12 ? "a"  : "p",
				tt:   H < 12 ? "am" : "pm",
				T:    H < 12 ? "A"  : "P",
				TT:   H < 12 ? "AM" : "PM",
				Z:    utc ? "UTC" : (String(date).match(timezone) || [""]).pop().replace(timezoneClip, ""),
				o:    (o > 0 ? "-" : "+") + pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4),
				S:    ["th", "st", "nd", "rd"][d % 10 > 3 ? 0 : (d % 100 - d % 10 != 10) * d % 10]
			};

		return mask.replace(token, function ($0) {
			return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1);
		});
	};
}();

// Some common format strings
dateFormat.masks = {
	"default":      "ddd mmm dd yyyy HH:MM:ss",
	shortDate:      "m/d/yy",
	mediumDate:     "mmm d, yyyy",
	longDate:       "mmmm d, yyyy",
	fullDate:       "dddd, mmmm d, yyyy",
	shortTime:      "h:MM TT",
	mediumTime:     "h:MM:ss TT",
	longTime:       "h:MM:ss TT Z",
	isoDate:        "yyyy-mm-dd",
	isoTime:        "HH:MM:ss",
	isoDateTime:    "yyyy-mm-dd'T'HH:MM:ss",
	isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'"
};

// Internationalization strings
dateFormat.i18n = {
	dayNames: [
		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
		"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
	],
	monthNames: [
		"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
		"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
	]
};

// For convenience...
Date.prototype.format = function (mask, utc) {
	return dateFormat(this, mask, utc);
};