var isNav4 = false;
var isW3C = false;
var isIE = false;
var subnavExists = new Array();
var current = null;

// Browser überprüfen etc.
if(navigator.appName.indexOf("Netscape") != -1) {
		if(parseInt(navigator.appVersion) == 4) {
				// Netscape Communicator 4.x
				isNav4 = true;
		} else if (parseInt(navigator.appVersion) >= 5) {
				// Netscape 6 oder Mozilla
				isW3C = true;
		}
} else {
		if((parseInt(navigator.appVersion) >= 4) &&
				(navigator.appName.indexOf("Microsoft")!=-1)) {
				// MSIE 4.x oder höher
				isIE = true;
		}

		if(navigator.userAgent.indexOf("Opera 5") != - 1) {
				// Opera 5.x - wird wie MSIE behandelt
				isIE = true;
		}
}


function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
		var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
		if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document;
		if((p=n.indexOf("?"))>0&&parent.frames.length) {
				d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
		  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++)
		x=d.forms[i][n];
		  for(i=0;!x&&d.layers&&i<d.layers.length;i++)
		x=MM_findObj(n,d.layers[i].document);
		  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
		if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
		obj.visibility=v; }
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function navMouseOver(navID) {
	switchNav(navID);
	window.clearTimeout(tp);
}

function navMouseOut(navID) {
	tp = window.setTimeout('switchNav(' + activeNav + ')',500);
}

function navClick(navID) {
	activeNav = navID;
	activeSubNav = null;
	switchNav(navID);
}

function subnavMouseOver(subnavID) {
	window.clearTimeout(tp);
	subnavHighlight(subnavID);
}

function subnavMouseOut(subnavID) {
	tp = window.setTimeout('switchNav(' + activeNav + ')',500);
}

function subnavHighlight(subnavID) {
	if(hlSubNav) {
		if(x=MM_findObj('nav' + hlSubNav))	x.src = navDark[hlSubNav].src;
		if(x=MM_findObj('navcell' + hlSubNav))	x.className = 'subnav';
	}
	if(x=MM_findObj('nav' + subnavID))	x.src = navBright[subnavID].src;
	if(x=MM_findObj('navcell' + subnavID))	x.className = 'subnav_hi';

	hlSubNav = subnavID;
}

function subnavClick(subnavID) {
	activeNav = hlNav;
	activeSubNav = subnavID;
}

function switchNav(navID) {
	var x;
//	alte Navigation "abschalten"
		if(subnavExists[hlNav]) MM_showHideLayers('subnav' + hlNav,'','hide');
		if(x=MM_findObj('nav' + hlNav))	x.src = navDark[hlNav].src;
		if(x=MM_findObj('navcell' + hlNav))	x.className = 'subnav';
//  neue Navigation aktivieren
		if(subnavExists[navID]) MM_showHideLayers('subnav' + navID,'','show');
		if(x=MM_findObj('nav' + navID))	x.src = navBright[navID].src;
		if(x=MM_findObj('navcell' + navID))	x.className = 'subnav_hi';
		if(navID==activeNav && activeSubNav) subnavHighlight(activeSubNav);
		else subnavHighlight(null);
		hlNav = navID;
}

function switchNavSubnav(navID, subnavID) {
	activeSubNav = subnavID;
	activeNav = navID;
	switchNav(navID);
}

var activeNav; 				// der angeklickte Navigationspunkt
var activeSubNav; 			// der angeklickte Subnavigationspunkt
var hlNav; 					// der Navigationspunkt, der gerade highlighted ist
var hlSubNav; 				// der angeklickte Navigationspunkt
var tp; 					// Pointer auf den Timeout

subnavExists[1] = true;
subnavExists[2] = true;
subnavExists[3] = true;
subnavExists[4] = true;
subnavExists[5] = true;
subnavExists[6] = true;

navBright = new Array();
navDark = new Array();