/*
Based on the implementation by Dean Parkinson

Copyright (C) 2007  Dean Parkinson

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

found at: http://www.dhtmlgoodies.com

*/

/*
var timeBeforeAutoHide = 700; //Delay in microseconds from when mouse leaves menu until it's hidden automatically
var slideSpeed_out = 10; //Slide speed out - higher value = faster
var slideSpeed_in = 10; //Slide speed in - higher value = faster
var slideTimeout_out = 25; //Slide speed out - microseconds between each step(Lower = faster)
var slideTimeout_in = 10; //Slide speed in - microseconds between each step(Lower = faster)
var showSubOnMouseOver = true; //Show sub menu on mouse over or mouse click. true = mouse over, false = mouse click. 
var fixedSubMenuWidth = false; //Sub menu width in pixel. Use false if width should be set automatically.
var xOffsetSubMenu = 0; //pixel to offset sub menu(horizontally). (You might want to use -2 if the menu slides to the left)
var slideDirection = 'right'; var firefox15SubWidth = 110; //Slide menu to the left or to the right.

*/
var MENUDIV_ID = "main_menu";
var SUBMENU_CLASS = 'sub_menu';
var menuItems;
var slideSpeed_out = 10;	// Steps to move sub menu at a time ( higher = faster)
var slideSpeed_in = 10;
var delayMenuClose = 150;	// Microseconds from mouseout to close of menu
//var slideTimeout_out = 25;	// Microseconds between slide steps ( lower = faster)
var slideTimeout_out = 10;
var slideTimeout_in = 10;	// Microseconds between slide steps ( lower = faster)
//var slideDirection = 'right';
var xOffsetSubMenu = 0; 	// Offset x-position of sub menu items - use negative value if you want the sub menu to overlap main menu

//Initialisiert das Menu
function initMenu() {
//Hauptmenü-Einträge -> MENUDIV_ID (alles, was mittels dhtmlgoodies_menu dargestellt wird)
//mainDiv=object HTML DivElement
//getElementById ... greift auf ein HTML-Element zu, das ein id-Attribut besitzt (hier: id=dhtmlgoodies_menu)
	var mainDiv = document.getElementById(MENUDIV_ID);
	//alle Menü-Einträge 
	menuItems = collectMenuNodes(mainDiv);
	//document.write(menuItems);
	if (menuItems) {
	//menuItems.length=6
		for (var no=0;no<menuItems.length;no++) {
			var mi = menuItems[no];
			//rendert den Hauptmenu-Punkt (MenuItem)
			mi.renderNode();
		}
		mainDiv.style.visibility = 'visible';
	}
	// window.onresize = resetPosition;
}

//Sammeln der Einträge entsprechend dem Hauptmenü
function collectMenuNodes(menuObj) {
     if (!menuObj) return null;
     //neuer Array für das Ergebnis
     var results = new Array();
     //ListElemente
     //getElementByTagName ... erzeugt Array für einen HTML-Elementtyp, über den die einzelnen Elemente ansprechbar sind 
     //menuUL ... Hauptmenü
     var menuUL = menuObj.getElementsByTagName('UL')[0];
     //ListEinträge des Hauptmenüs
     var menuLI = menuUL.getElementsByTagName('LI')[0];
     //solange es ListElemente gibt
     while(menuLI) {
        if(menuLI.tagName && menuLI.tagName.toLowerCase()=='li') {
        //erzeugt aus den List-Einträgen die Menü-Einträge
        //menuObj = Hauptmenü
        //menuUL = Hauptmenü
        //menuLI = Listeinträge des Hauptmenüs 
        //laufende Nummer lvlnum=0
        //das Hauptmenü Parent=null
              results[results.length] = new MenuItem(menuObj, menuUL, menuLI, 0, null);
        }
        menuLI = menuLI.nextSibling;
     }
     return results;
}

//alles für die Menü-Einträge
function MenuItem(divref, ulref, liref, lvlnum, parentref) {
//divref=menuObj
//ulref=menuUL
//liref=menuLI
//lvlnum =0
//parentref=null
//kein Elternteil
	this.parent = parentref;
	//menuObj
	this.div = divref;
	//menuUL
	this.ul = ulref;
	//Breite des Objektes (Menü-Punkt) this.width=134;
	//this.width = this.ul.offsetWidth;
	//Höhe des Objektes (Menü-Punkt) this.height = 25, 38 oder 23 px
	this.height=this.ul.offsetHeight;
	//this.height = this.ul.offsetHeight;
	// this.left = div.style.left.replace(/[^0-9]/g,'');
	//ListElement
	this.li = liref;
	//Link des Menüpunktes
	this.alink = this.li.getElementsByTagName('A')[0];
	//laufende Nummer
	this.lvl = lvlnum;
	//Index wird aus Funktion getNextIndex errechnet -> idx=0
	this.idx = getNextIndex(this.lvl);
	//Kinder
	this.children;
	//Untermenu = ListElemente, dort wird nach UL gesucht
	this.subUL = this.li.getElementsByTagName('UL')[0];
	//Kinder
	//this.children;
	
	//Normalzustand: keine Maus drauf, Untermenu ist geschlossen und nicht geöffnet
	this.isClickOnMe = false;
	// note: if !isOpen && !isClosed then I am animating a slide
	this.isChildMenuOpen = false;
	this.isChildMenuClosed = true;
	// Constructor
	// if a node does not have an A tag but it's children do then we need
	// null out this node's alink field...
	//brauch ich nicht, da alle Menü-Einträge Links sein müssen wegen Bildwechsel
	//if (this.alink) {
		//if (this.alink.parentNode!=this.li) this.alink = null;
	//}
	//wenn dieses Untermenü Listeneinträge hat
	if (this.subUL) {
		this.children = new Array();
		//Untermenu-Listen-Einträge
		var subLI = this.subUL.getElementsByTagName('LI')[0];
		while(subLI) {
			if(subLI.tagName && subLI.tagName.toLowerCase()=='li') {
			//die Untermenü-Listen-Elemente werden wieder zu Menü-.Einträge
			//menuObj = null, da kein Hauptmenü-Punkt
			//menuUL = das Submenü von diesem Untermenü
			//menuLI = diese Listeneinträge
			//laufendeNummer = um 1 erhöht
			//Parent = das hier
				this.children[this.children.length] = new MenuItem(null, this.subUL, subLI, this.lvl + 1, this);
			}
			// nextSibling ... speichert aus Sicht eines Knotens den unmittelbar nächsten Knoten, wenn kein Knoten mehr folgt, dann =null
			subLI = subLI.nextSibling;
		}
	}

	this.getPostfix = function() {
		return '_' + this.idx + '_' + this.lvl;
	}
	
	this.getId = function() {
		return "MenuItem" + this.getPostfix();
	}

	this.hasChildren = function() {
		return (this.children!=null);
	}

	this.getTopPos = function() {
		var origDisp = this.div.style.display;
		this.div.style.display = "";
		var obj = this.li;
		//var result = obj.offsetTop+23;
		var result = obj.offsetTop;
		while((obj = obj.offsetParent) != null) result += obj.offsetTop;
		this.div.style.display = origDisp;
		return result;
	}

	this.getLeftPos = function() {
		var origDisp = this.div.style.display;
		this.div.style.display = "";
		var obj = this.li;
		var result = obj.offsetLeft;
		while((obj = obj.offsetParent) != null) result += obj.offsetLeft;
		this.div.style.display = origDisp;
		return result;
	}

	this.getBottomPos = function() {
		var origDisp = this.div.style.display;
		this.div.style.display = "";
		var obj = this.li;
		var result = obj.offsetHeight;
		while((obj = obj.offsetParent) != null) result += obj.offsetHeight;
		this.div.style.display = origDisp;
		return result;
	}

//Setzt die Eigenschaften für den Menu-Punkt
	this.renderNode = function() {
		// set node properties
		//Startseite=menuItemLI_0_0
		this.li.id = "menuItemLI" + this.getPostfix();
		this.ul.style.position = "relative";
		if (this.alink) {
		//Startseite=menuItemA_0_0
			this.alink.id = "menuItemA" + this.getPostfix();
			//this.alink.onmouseover = function() {mouseOn(this);};
			//this.alink.onmouseout = function() {mouseOff(this);};
			if(!this.isClickOnMe){
				this.alink.onclick = function() {mouseOn(this);};
			}else if(this.isClickOnMe){
				this.alink.onclick = function() {mouseOff(this);}
			}
		} else {
			//this.li.onmouseover = function() {mouseOn(this);};
			//this.li.onmouseout = function() {mouseOff(this);};
			//if(this.clicked){
				//this.alink.onclick = function() {mouseOn(this);};
			//}else{
				//this.alink.onclick = function() {mouseOff(this);}
			//}
		}

		// set sub-menu nodes
		if (this.hasChildren()) {
			var mi = this.children[0];
			var subdiv = document.createElement('DIV');
			subdiv.className=SUBMENU_CLASS;
			document.body.appendChild(subdiv);
			subdiv.id = "menuItemDIV" + mi.getPostfix();
			this.subUL.id = "menuItemUL" + mi.getPostfix();
			subdiv.appendChild(this.subUL);
			//subdiv.style.left = this.getLeftPos() + this.width + xOffsetSubMenu + 'px';
			subdiv.style.left = this.getLeftPos() + +xOffsetSubMenu + 'px';
			subdiv.style.top = this.getTopPos()+ this.li.offsetHeight +'px';
			//subdiv.style.top = this.getTopPos() + 'px';
			subdiv.style.visibility = "hidden";
			subdiv.style.display = "none";
			subdiv.style.zindex = "1000";
			for (var no=0;no<this.children.length;no++) {
				var mi = this.children[no];
				mi.div = subdiv;
				mi.renderNode();
			}
		}
		return this.li;
	}

	this.findNode = function(searchId) {
		var result;
		if (this.getId() == searchId) {
			result = this;
		} else {
			if (this.hasChildren()) {
				for (var no=0;no<this.children.length;no++) {
					var mi = this.children[no];
					result = mi.findNode(searchId);
					if (result!=null) break;
				}
			}
		}
		return result;
	}

	this.mouseOn = function() {
		this.isClickOnMe = true;
		if (this.hasChildren() && this.isChildMenuClosed) {
			//this.initiateChildMenuOpen(this.nextSibling);
			this.initiateChildMenuOpen();
		}
	}

	this.mouseOff = function() {
		this.isClickOnMe = false;
		if (this.hasChildren() && !this.isChildMenuClosed) {
			this.initiateChildMenuClose();
		} else if (this.parent) {
			this.parent.mouseOff();
		}
	}

	/*this.isMouseOnChild = function() {
		if (this.isClickOnMe) return true;
		if (this.hasChildren()) {
			for (var no=0;no<this.children.length;no++) {
				if (this.children[no].isMouseOnChild()) return true;
			}
		}
		return false;
	}*/

	//this.initiateChildMenuOpen = function(nextNode) {
	this.initiateChildMenuOpen = function() {
		this.isChildMenuClosed = false;
		var childDiv = this.children[0].div;
		//var nodeDiv = this.div;
		//childDiv.style.width = "0px";
		childDiv.style.height="0px";
		childDiv.style.visibility = "visible";
		childDiv.style.display = "";
		//this.slideChildMenu(nextNode);
		this.slideChildMenu();
	}

	this.initiateChildMenuClose = function() {
		this.isChildMenuOpen = false;
		// we have to wait to close the menu
		// allow the mouse to navigate over the child menu
		setTimeout("slideChildMenu('" + this.getId() + "')", delayMenuClose);
	}


//Slides das Untermenü
	//this.slideChildMenu = function(nextNode) {
	this.slideChildMenu = function() {
		//var nodeDiv = this.div; 
		var divref = this.children[0].div;
		var ulref = this.children[0].ul;
		//var maxwidth = this.children[0].width;
		//=154
		var maxheight = this.children[0].height+2;
		//document.write(maxheight);
		//var nextWidth;
		//var nextHeight = 69;
		var nextHeight;
		//if (this.isMouseOnMe  || this.isMouseOnChild()) {
		if (this.isClickOnMe) {
			//nextWidth = divref.offsetWidth + slideSpeed_out;
			//if(divref.offsetHeight!=0){
			//nextHeight = divref.offsetHeight + slideSpeed_out + nextHeight;
			 /*if(divref.offsetHeight == 0){
			 	nextHeight = divref.offsetHeight + slideSpeed_out + nextHeight;
			 }else{
			 	nextHeight= divref.offsetHeight + ((divref.offsetHeight - 69) / slideSpeed_out) * slideSpeed_out;
			 	//document.write(nextHeight);
			 }*/
			 if(divref.offsetHeight == 0){
			 	nextHeight=69;
			 }else{
			 	nextHeight=divref.offsetHeight;
			 }
			 
			 
			//if (nextWidth >= maxwidth) {
			//if(nextHeight > 69){
			//if(nextHeight >= maxheight+3){
			if(nextHeight >= (maxheight+2)){
				//this.finishOpeningChild(divref, ulref, maxwidth);
				//document.write(maxheight);
				this.finishOpeningChild(divref, ulref, maxheight);
				//this.finishMovingMenuDown(maxheight+84);
			} else { 
				//ulref.style.top = nextWidth - maxwidth + "px";
				//document.write(nextHeight - maxheight);
				ulref.style.top= nextHeight - maxheight + "px";
				//divref.style.width = nextWidth + "px";
				//divref.style.height = 69 + (((nextHeight - 69) / slideSpeed_out +1) * slideSpeed_out) +"px";
				divref.style.height = nextHeight + slideSpeed_out +"px";
				//this.moveMenu(nextHeight);
				setTimeout("slideChildMenu('" + this.getId() + "')", slideTimeout_out);
			}
			//this.moveMenu(maxheight);
		} else {
			//nextWidth = divref.offsetWidth - slideSpeed_in;
			nextHeight = divref.offsetHeight - slideSpeed_in;
			//if (nextWidth <= 0) {
			if(nextHeight<69){
				//this.finishClosingChild(divref, ulref, maxwidth);
				this.finishClosingChild(divref, ulref, maxheight);
				//this.moveMenu(maxheight);
			} else {
				//ulref.style.top = nextWidth - maxwidth + "px";
				ulref.style.top = nextHeight - maxheight + "px";
				//divref.style.width = nextWidth + "px";
				divref.style.height = nextHeight + "px";
				//this.moveMenu(nextHeight);
				setTimeout("slideChildMenu('" + this.getId() + "')", slideTimeout_out);
			}
			
		}
	}


	//this.finishOpeningChild = function(divref, ulref, maxwidth) {
	this.finishOpeningChild = function(divref, ulref, maxheight) {
		//da geöffnet, markiere als geöffnet -> Möglichkeit zum Schließen geben
		this.isChildMenuOpen = true;
		//da geöffnet, markiere als nicht geschlossen -> Möglichkeit zum Schließen geben
		this.isChildMenuClosed = false;
		//linker Abstand Schrift im Untermenü
		ulref.style.left = "0px";
		//Breite des Untermenüs
		//divref.style.width = maxwidth + "px";
		divref.style.height = maxheight + "px";
		this.alink.onclick = function() {mouseOff(this);}
	}

//this.finishMoveingMenuDown = function(maxheight){
//menuItem[3].style.height=maxheight +"px";
//}

	//this.finishClosingChild = function(divref, ulref, maxwidth) {
	this.finishClosingChild = function(divref, ulref, maxheight) {
		//da geschlossen, markiere als nicht geöffnet -> Möglichkeit zum Öffnen geben
		this.isChildMenuOpen = false;
		//da geschlossen, markiere als geschlossen -> Möglichkeit zum Öffnen geben
		this.isChildMenuClosed = true;
		//??
		divref.style.visibility = "hidden";
		//??
		divref.style.display = "none";
		//??
		//divref.style.width = maxwidth + "px";
		divref.style.height = maxheight + "px";
		//??
		if (this.parent){
		 this.parent.mouseOff();
		}
		this.alink.onclick = function() {mouseOn(this);}
	}

}

//findet den nächsten Index von der laufenden Nummer
function getNextIndex(lvl) {
	var result = 0;
	//zu Beginn: lvl = 0 -> else -> result=indeces[0]=0, indeces[0]=1
	if (indeces.length<=lvl) {
		indeces[lvl] = 1;
	} else {
		result = indeces[lvl];
		indeces[lvl]++;
	}
	return result;
}



//var firefox15SubWidth = 110;*/

/* Don't change anything below here */

var indeces = new Array();
indeces[0] = 0;
/*var isMSIE = navigator.userAgent.indexOf('MSIE')>=0?true:false;
var browserVersion = parseInt(navigator.userAgent.replace(/.*?MSIE ([0-9]+?)[^0-9].*/
/*g,'$1'));
if(!browserVersion)browserVersion=1;*/

function mouseOn(obj) {
	//Findet alle zugehörigen Untermenü-Punkte zu einem Menü
	var mi = findNode(getSearchIdFromObj(obj));
	if (mi) mi.mouseOn();
	this.isClickOnMe = true;
}

function mouseOff(obj) {
	var mi = findNode(getSearchIdFromObj(obj));
	if (mi) mi.mouseOff();
	this.isClickOnMe = false;
}

function getSearchIdFromObj(obj) {
	// pull the postfix off the A link or LI tag id and return the menu item ID
	var objId = obj.id;
	var idx = objId.indexOf('_');
	if (idx>=0) {
		return "MenuItem" + objId.substring(idx);
	}
	return null;
}

function slideChildMenu(aId) {
	var mi = findNode(aId);
	if (mi) mi.slideChildMenu();
}



function findNode(searchId) {
	var result;
	for (var no=0;no<menuItems.length;no++) {
		result = menuItems[no].findNode(searchId);
		if (result) return result;
	}
	return null;
}


/*function preloader() {
var hoverImages = new Array(
'resources/images/Startseite_aktiv.png', 
'resources/images/Fragenkatalog_aktiv.png', 
'resources/images/Demoprogramme_aktiv.png', 
'resources/images/intern_aktiv.png',
'resources/images/Impressum_aktiv.png',
'resources/images/Kontakt_aktiv.png',
'resources/images/Baden-Wuerttemberg_aktiv.png',
'resources/images/Bayern_aktiv.png',
'resources/images/Berlin_aktiv.png',
'resources/images/Brandenburg_aktiv.png',
'resources/images/Bremen_aktiv.png',
'resources/images/Hamburg_aktiv.png',
'resources/images/Hessen_aktiv.png',
'resources/images/Mecklenburg-Vorpommern_aktiv.png',
'resources/images/Niedersachsen_aktiv.png',
'resources/images/Nordrhein-Westfalen_aktiv.png',
'resources/images/Rheinland-Pfalz_aktiv.png',
'resources/images/Saarland_aktiv.png'
'resources/images/Sachsen_aktiv.png'
'resources/images/Sachsen-Anhalt_aktiv.png',
'resources/images/Schleswig-Holstein_aktiv.png',
'resources/images/Thueringen_aktiv.png',

'resources/images/Startseite_inaktiv.png', 
'resources/images/Fragenkatalog_inaktiv.png', 
'resources/images/Demoprogramme_inaktiv.png', 
'resources/images/intern_inaktiv.png',
'resources/images/Impressum_inaktiv.png',
'resources/images/Kontakt_inaktiv.png',
'resources/images/Baden-Wuerttemberg_inaktiv.png',
'resources/images/Bayern_inaktiv.png',
'resources/images/Berlin_inaktiv.png',
'resources/images/Brandenburg_inaktiv.png',
'resources/images/Bremen_inaktiv.png',
'resources/images/Hamburg_inaktiv.png',
'resources/images/Hessen_inaktiv.png',
'resources/images/Mecklenburg-Vorpommern_inaktiv.png',
'resources/images/Niedersachsen_inaktiv.png',
'resources/images/Nordrhein-Westfalen_inaktiv.png',
'resources/images/Rheinland-Pfalz_inaktiv.png',
'resources/images/Saarland_inaktiv.png'
'resources/images/Sachsen_inaktiv.png'
'resources/images/Sachsen-Anhalt_inaktiv.png',
'resources/images/Schleswig-Holstein_inaktiv.png',
'resources/images/Thueringen_inaktiv.png');
var i=0;
objImage = new Image();
for	(i=1; i<=hoverImages.length; i++){
	objImage.src = hoverImages[i];
}
}*/



window.onload = initMenu;