var anzeigedauer = 4000;
var currentImage = 0;
var imageArray = new Array();

sfHover = function() { if(typeof(document.getElementById('nav')) != 'undefined'){
	check4IE();
	
	var sfEls = getElementsByClassName("item");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			//this.className+=" sfhover";
			
			for(var j=0; j<sfEls.length; j++){
				if (sfEls[j].lastChild) {
					if (sfEls[j].lastChild.nodeName == "UL" && !hasClass(sfEls[j].lastChild, 'subsubNav')) {
						sfEls[j].lastChild.style.left = '-9999px';
					}
				}
			}
			
			if (this.lastChild.nodeName == "UL" && this.lastChild != document.getElementById("nav")) {
				if (hasClass(this.lastChild, 'subNav')) {
					this.lastChild.style.width = this.lastChild.offsetWidth - 7;
				}
				
				var randToMenu = findPos(document.getElementById('nav'));
				var randToItem = findPos(this);
				var itemWidth = this.offsetWidth;
				var subWidth = this.lastChild.offsetWidth;
				var itemToSub = (subWidth - itemWidth) / 2;
				var randToSub = randToItem - itemToSub + randToMenu;
				var menuWidth = 1000;
				
				if (hasClass(this.lastChild, 'subNav')) {
					
					this.lastChild.style.left = randToItem + 'px';
					if (randToMenu > randToItem) {
						//align left
						this.lastChild.style.left = randToMenu + 'px';
					}
					else{
						//alert(randToSub + ' + ' + subWidth + '   ' + randToMenu + ' + ' + menuWidth);
						if (randToSub + subWidth > randToMenu + menuWidth) {
							//align right
							//this.lastChild.style.left = randToMenu + menuWidth - subWidth + 'px';
						}
						else {
							//align middle
							this.lastChild.style.left = findPos(this) + 'px';
						}
					}
					
				}else if (hasClass(this.lastChild, 'subsubNav')){
					this.lastChild.style.left = 9999 + findPos(this) + 'px';
				}
			}
		}
		sfEls[i].onmouseout=function() {
			//this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
			if(this.lastChild.nodeName == "UL" && hasClass(this.lastChild, 'subsubNav')){
				this.lastChild.style.left = '-9999px';
			}
		}
	}
	
	
	
	if($('header')){
		var angezeigteBilder = $('header').getElements('div.csc-textpic-imagewrap ul');
		//für alle bildcontainer (laut vorlage 3)
		for(var i = 0; i< angezeigteBilder.length; i++){
			imageArray[i] = new Object();
			imageArray[i]['images'] = shuffle(angezeigteBilder[i].getElements('img'));
			//imageArray[i]['images'].shuffle();
			imageArray[i]['curr'] = 0;
			//für alle bilder
			for(var j = 0; j < imageArray[i]['images'].length; j++){
				if(j != 0){
					imageArray[i]['images'][j].setStyle('opacity', '0');
					imageArray[i]['images'][j].setStyle('display', 'block');
				}else{
					imageArray[i]['images'][j].setStyle('display', 'block');
				}
			}
		}
		setTimeout(fadeElements, anzeigedauer);
	}
}}

shuffle = function(o){ //v1.0
	for(var j, x, i = o.length; i; j = parseInt(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
	return o;
};

/**
 * Funktion fadeElements
 * 
 * Recursive Funktion sum ein/ausfaden der Bilder der linken Spalte.
 * 
 * Das aktuelle Bild wird ausgefadet während gleichzeitig das nächste eingefadet wird.
 * Sollte der Loop am Ende ankommen, beginnt er mit dem ersten Bild von vorne.
 */
function fadeElements(){
	for(var i = 0; i < imageArray.length; i++){
		if(imageArray[i]['images'].length > 1){
			imageArray[i]['images'][imageArray[i]['curr']].fade('out');
			
			imageArray[i]['curr']++;
			if(imageArray[i]['curr'] >= imageArray[i]['images'].length){
				imageArray[i]['curr'] = 0;
			}
			
			//alert(imageArray[i]['images'][imageArray[i]['curr']].get('src'));
			imageArray[i]['images'][imageArray[i]['curr']].fade('in');
		}
	}
	
	setTimeout(fadeElements, anzeigedauer);
}

function findPos(obj){
	var currentleft = 0;
	if(obj.offsetParent){
		do{
			currentleft += obj.offsetLeft;
		}while(obj = obj.offsetParent);
		
		return currentleft;
	}
}

function hasClass (obj, className) {
	if (typeof obj == 'undefined' || obj==null || !RegExp) { return false; }
	var re = new RegExp("(^|\\s)" + className + "(\\s|$)");
	if (typeof(obj)=="string") {
		return re.test(obj);
	}
	else if (typeof(obj)=="object" && obj.className) {
		return re.test(obj.className);
	}
	return false;
}

/*
	Developed by Robert Nyman, http://www.robertnyman.com
	Code/licensing: http://code.google.com/p/getelementsbyclassname/
*/	
var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};

window.onload = sfHover;