/**
* dropDownMenu v0.5 sw edition
* 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
*
* Original written by Matthias Platzer at http://knallgrau.at
*
* Modified by Sven Wappler http://www.wappler.eu and Tony Coconate http://www.tonycoconate.com
*
* Use it as you need it
* It is distributed under a BSD style license
*/

/**
* 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
* @param customConfigFunction  Function            optional config function to override the default settings
*                                            for an example see Menu.prototype.config
*/
var Menu = Class.create();
Menu.prototype = {

	initialize: function(idOrElement, name, customConfigFunction)
	{

		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);
	},

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

};

var MenuContainer = Class.create();
MenuContainer.prototype = {
	initialize: function(idOrElement, parent)
	{
		this.type = "menuContainer";
		this.menuItems = [];
		this.init(idOrElement, parent);
	},

	init: function(idOrElement, parent)
	{
		this.element = $(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.element.hasClassName("level1")) this.menuType = "horizontal";
			else if (this.element.hasClassName("level2")) this.menuType = "dropdown";
			else if (this.element.hasClassName("level3")) this.menuType = "flyout";

			if (this.menuType == "flyout" || this.menuType == "dropdown")
			{
				this.isOpen = false;
				Element.setStyle(this.element,{
					position: "absolute",
					top: "0px",
					left: "0px",
					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);
					}
				}
			}
		}
	},

	getBorders: function(element)
	{
		var ltrb = ["Left","Top","Right","Bottom"];
		var result = {};
		for (var i = 0; i < ltrb.length; ++i)
		{
			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;
	},

	open: function()
	{
		if (this.root.closeDelayTimer) window.clearTimeout(this.root.closeDelayTimer);
		this.parentMenu.closeAll(this);
		this.isOpen = true;
		if (this.menuType == "dropdown")
		{
			var parentHeight = Element.getHeight(this.parent.element);
			if (parentHeight > 16)
			{
				var menuOffsetY = 13 - ((parentHeight / 2) - 8);
			}
			else
			{
				var menuOffsetY = 14;
			}
			Element.setStyle(this.element,{
				left: (Position.positionedOffset(this.parent.element)[0]) - 10 + "px",
				top: (Position.positionedOffset(this.parent.element)[1] + Element.getHeight(this.parent.element)) + menuOffsetY + "px"
			});
			if (!this.element.down(".menufix"))
			{
				var iframe = document.createElement('iframe');
				$(iframe).setAttribute('width', Element.getWidth(this.element));
				$(iframe).setAttribute('height', Element.getHeight(this.element));
				$(iframe).setAttribute('class', 'menufix');
				$(iframe).className = "menufix";
				this.element.appendChild(iframe);
			}
		}
		else if (this.menuType == "flyout")
		{
			var parentMenuBorders = this.parentMenu ? this.parentMenu.getBorders() : new Object();
			var thisBorders = this.getBorders();
			if (
				(Position.positionedOffset(this.parentMenu.element)[0] + this.parentMenu.element.offsetWidth + this.element.offsetWidth + 20) >
				(window.innerWidth ? window.innerWidth : document.body.offsetWidth)
			)
			{
				Element.setStyle(this.element,{
					left: (- this.element.offsetWidth - (this.root.collapseBorders ?  0 : parentMenuBorders["left"])) + "px"
				});
			}
			else
			{
				Element.setStyle(this.element,{
					left: (this.parentMenu.element.offsetWidth - parentMenuBorders["left"] - (this.root.collapseBorders ?  Math.min(parentMenuBorders["right"], thisBorders["left"]) : 0)) + "px"
				});
			}
			Element.setStyle(this.element,{
				top: (this.parent.element.offsetTop - parentMenuBorders["top"] - this.menuItems[0].element.offsetTop) + "px"
			});
		}
		Element.setStyle(this.element,{visibility: "visible"});
		var parentClassname = new Array();
		parentClassname.push(this.parent.element.className);
		if (this.parent.element.className == parentClassname[0])
		{
			if (parentClassname[0].search(" highlight") == -1)
			{
				this.parent.element.className = parentClassname[0]+" highlight";
			}
		}

		$$('.wmvhack').each(function(x)
		{
			if (!TT.client_type)
			{
				x.style.visibility = "hidden";
			}
			else
			{
				var ct = TT.client_type;
				var type = ct.b_type;
				if (type == "ie")
				{
					x.style.display = "none";
				}
				else
				{
					x.style.visibility = "hidden";
				}
			}
		});
	},

	close: function()
	{
		Element.setStyle(this.element,{visibility: "hidden"});
		var parentClassname = new Array();
		parentClassname.push(this.parent.element.className);
		if (this.parent.element.className == parentClassname[0])
		{
			this.parent.element.className = parentClassname[0].replace(" highlight", "");
		}
		this.isOpen = false;
		this.closeAll();

		$$('.wmvhack').each(function(x)
		{
			if (!TT.client_type)
			{
				x.style.visibility = "visible";
			}
			else
			{
				var ct = TT.client_type;
				var type = ct.b_type;
				if (type == "ie")
				{
					x.style.display = "block";
				}
				else
				{
					x.style.visibility = "visible";
				}
			}
		});
	},

	closeAll: function(trigger)
	{
		for (var i = 0; i < this.menuItems.length; ++i)
		{
			this.menuItems[i].closeItem(trigger);
		}
	}

};

var MenuItem = Class.create();

Object.extend(Object.extend(MenuItem.prototype, MenuContainer.prototype),
{
	initialize: function(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);
			}
		}
	},

	openItem: function()
	{
		this.isOpen = true;
		if (this.subMenu)
		{ this.subMenu.open(); }
	},

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

var menu;

function configMenu()
{
	this.closeDelayTime = 400;
}

function initMenu()
{
	menu = new Menu('root', 'menu', configMenu);
}

Event.observe(window, 'load', initMenu, false);