// Menu Code
var Menu = Class.create();
Event.observe(window, 'load', initMenu, false);
Menu.prototype =
{
    initialize: function(idOrElement, name, customConfigFunction)
    {
	this.name = name;
	this.type = "menu";
	this.closeDelayTimer = null;
	this.closingMenuItem = null;
	this.extral = 0;
	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("dropdown")) this.menuType = "dropdown";
	    else if (this.element.hasClassName("flyout")) this.menuType = "flyout";
	    else if (this.element.hasClassName("horizontal")) this.menuType = "horizontal";
	    else this.menuType = "standard";
	    if (this.menuType == "flyout" || this.menuType == "dropdown")
	    {
		this.isOpen = false;
		Element.setStyle(this.element,
		{
	      	    position: "absolute",
	      	    top: "0px",
	      	    left: "0px",
		    display: "none"
//	      	    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.isOpen)
	//    this.close();

	this.closeAll();
	if (this.root.closeDelayTimer) window.clearTimeout(this.root.closeDelayTimer);
	this.parentMenu.closeAll(this);
	this.isOpen = true;
	if (this.menuType == "dropdown")
	{
	    var l = (Position.positionedOffset(this.parent.element)[0]);
	    if(Prototype.Browser.IE)
		l = l + this.root.extra_ie_l;
	    l = l + this.root.extra_l;
	    l = l + "px";

	    var t = (Position.positionedOffset(this.parent.element)[1] + Element.getHeight(this.parent.element));
	    if(Prototype.Browser.IE)
		t = t + this.root.extra_ie_t;
	    t = t + this.root.extra_t;
	    t = t + "px";
	    Element.setStyle(this.element,
	    {
		left: l,
		top: t
	    });
	}
	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"
	    });
	}
	var toopen = this.element;
	if(toopen.style.display=='none')
	{
	    this.element.style.display='block';
	    //new Effect.toggle(toopen, 'slide');
	}
    },
    close: function()
    {
	var toclose = this.element;
	this.isOpen = false;
	this.closeAll();
    	if(toclose.style.display!='none')
	{
	    toclose.style.display='none';
    	    //new Effect.toggle(toclose, 'slide');
	}
    },
    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 menuTop;
var menuMain;
function configTopMenu()
{
  this.closeDelayTime = 0;
  this.extra_l=0;
  this.extra_t=0;
  this.extra_ie_l=0;
  this.extra_ie_t=0;
}

function configMainMenu()
{
  //extra_l + extra_ie_l = neue position für ie
  this.closeDelayTime = 0;
  this.extra_l=-9;
  this.extra_t=-5;
  this.extra_ie_l=0;
  this.extra_ie_t=-1;

}

function initMenu()
{
    if($('root'))
	menuTop = new Menu('root', 'menuTop', configTopMenu);
    if($('mainmenu'))
	menuMain = new Menu('mainmenu', 'menuMain', configMainMenu);

}

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