// layer handling start ------------------------------------------------------------
var ns6 = (document.getElementById) ? 1:0;	//netscape6+
var ie = (document.all) ? 1:0;				//internetexplorer4+
var ns = (document.layers) ? 1:0;			//netscape4+ <6
var mask = 0;
var taggedlayer = 0;
var taggedlink = 0;
var blocktagged = 0;

if(navigator.userAgent.indexOf( "Mac" )!= -1){
	Mac = true ;
}else{
	Mac = false ;
}

function hidelayer(layerName){
	if(ns){
		document.layers[layerName].visibility = "hide";
	}

	if(ie){
		document.all.item(layerName).style.visibility = "hidden";
	}
	else{if(ns6){
		document.getElementById(layerName).style.visibility = "hidden";
		}
	}
}

function showlayer(layerName){
	if(ns){
		if (layerName != 'layeraus')
			document.layers[layerName].style.top = document.layers[layerName.replace(/layer/gi,"")].offsetTop; 
		document.layers[layerName].visibility = "show";
	}
	
	if(ie){
		if (layerName != 'layeraus'){
			if(Mac == true){
			document.all.item(layerName).style.top = document.all.item(layerName.replace(/layer/gi,"")).offsetTop-6;
			}else{
			document.all.item(layerName).style.top = document.all.item(layerName.replace(/layer/gi,"")).offsetTop;
			}
		} 
		document.all.item(layerName).style.visibility = "visible";
	}
	else{if(ns6){
		if (layerName != 'layeraus')
			document.getElementById(layerName).style.top = document.getElementById(layerName.replace(/layer/gi,"")).offsetTop; 
		document.getElementById(layerName).style.visibility = "visible";
		}
	}
}

//layer fuer content
function layeraus(){
	if(taggedlayer!='0'){
		hidelayer('layer' + taggedlayer)
		hidelayer('layeraus')
	}
}	
function layeran(){
	if(taggedlayer!='0'){
		showlayer('layer' + taggedlayer)
		showlayer('layeraus')
	}	
}	

//class auf On bzw. Off
function classaus(){
	if(taggedlayer!='0'){
		if(taggedlayer.substring(0,1) == 'a'){
		document.getElementById(taggedlayer).className='navitem';
		}
		if(taggedlayer.substring(0,1) == 'b'){
		document.getElementById(taggedlayer).className='navitem2';
		}
		if(taggedlayer.substring(0,1) == 'x'){
		document.getElementById(taggedlayer).className='loginHead';
		}
	}
}	
function classan(){
	if(taggedlayer!='0'){
		if(taggedlayer.substring(0,1) != 'x'){
		document.getElementById(taggedlayer).className='navitemOn';
		}else{
		document.getElementById(taggedlayer).className='loginHeadOn';		
		}
	}
}	
function linkaus(){
	if(taggedlink!='0'){
		if(taggedlayer.substring(0,1) == 'a'){
		document.getElementById(taggedlink).className='navLeft';
		}
		if(taggedlayer.substring(0,1) == 'b' || taggedlayer.substring(0,1) == 'x'){
		document.getElementById(taggedlink).className='navLeft2';
		}
	}
}	
function linkan(){
	if(taggedlink!='0'){
		document.getElementById(taggedlink).className='navLeftOn';
	}
}		


// layer handling ende -------------------------------------------------------------


//block
function hideBlock(layerName){
       document.getElementById(layerName).style.display = "none";
}
function showBlock(layerName){
       document.getElementById(layerName).style.display = "block";
}

function switchBlock(layerName){
		//Beim ersten Abfragen der Eigenschaft kommt immer leer raus, nach dem ersten setzen funktioniert es dann korrekt (ms)
		//alert(document.getElementById(layerName).style.display);
		if (document.getElementById(layerName).style.display == "block")
			hideBlock(layerName);
		else		
			if (blocktagged != 0){
				hideBlock(blocktagged);
			}
			showBlock(layerName);	
}

//Dynapi

function layermenu(layertoshow,father) {
	if (layertoshowold != ""){
		DynAPI.document.all[layertoshowold].setVisible(false);
		DynAPI.document.all[layertoshowold].setZIndex(-1);
	}
	if (untertoshowold != ""){
		DynAPI.document.all[untertoshowold].setVisible(false);
		DynAPI.document.all[untertoshowold].setZIndex(-1);
	}
	if (DynAPI.document.all[layertoshow]) {
		if (father != "")
			DynAPI.document.all[layertoshow].moveTo(DynAPI.document.all[father].getX() + DynAPI.document.all[father].getWidth()+ hauptabstand,(DynAPI.document.all[father].getY())); 
		DynAPI.document.all[layertoshow].setVisible(true);
		DynAPI.document.all[layertoshow].setZIndex(2);
		layertoshowold = layertoshow; 
	}
	timer = new Date();
}
function layerunter(untertoshow,father,punkt) {
	if (untertoshowold != ""){
		DynAPI.document.all[untertoshowold].setVisible(false);
		DynAPI.document.all[untertoshowold].setZIndex(-1);
	}
	if (DynAPI.document.all[untertoshow]) {
		DynAPI.document.all[untertoshow].moveTo(DynAPI.document.all[father].getX() + DynAPI.document.all[father].getWidth()+ hauptabstand,(postop + buttonheight + ((punkt-1) * buttonheight2)));
		DynAPI.document.all[untertoshow].setVisible(true);
		DynAPI.document.all[untertoshow].setZIndex(2);
		untertoshowold = untertoshow;
	}
	timer = new Date();
}
function checkhidemenu() {
	tempDate = new Date();
	if((tempDate - timer) > ausblenden){
		if (layertoshowold != ""){
			DynAPI.document.all[layertoshowold].setVisible(false);
			DynAPI.document.all[layertoshowold].setZIndex(-1);
		}
		if (untertoshowold != ""){
			DynAPI.document.all[untertoshowold].setVisible(false);
			DynAPI.document.all[untertoshowold].setZIndex(-1);
		}
	}
}
function reset(){
	timer = new Date();
}


function navigation(myname)
{linkaus();classaus();layeraus();taggedlayer=myname;classan();layeran();taggedlink=myname + "a";linkan();}

function navlayer()
{classaus();linkaus();layeraus();}