var nNavigatorIndex = 0;
var nNavigatorLinksIndex = 0;

function transparency(element,percentage) {
	var i, count, objStyle, filterValue, opacityValue;
	if(document.getElementById) {
		if(typeof(element)=="object" && element) { obj=element; }
		else if (document.getElementsByName(element) && document.getElementsByName(element)[0]) { obj=document.getElementsByName(element); }
		else if (document.getElementById(element)) { obj=document.getElementById(element); }
		else if (document.getElementsByTagName && document.getElementsByTagName(element) && document.getElementsByTagName(element)[0]) { obj=document.getElementsByTagName(element); }
		else { obj=false; }
		if(obj) {
			percentage=(typeof(percentage)=="undefined")?50:100-percentage;
			filterValue="Alpha(opacity="+percentage+")";
			opacityValue=""+percentage/100;
			count=(obj.length)?obj.length:1;
			for(i=0;i<count;i++) {
				objStyle=(obj.length)?obj[i].style:obj.style;
				objStyle.filter=filterValue;
				objStyle.MozOpacity=opacityValue;
				objStyle.KhtmlOpacity=opacityValue;
				objStyle.opacity=opacityValue;
			}
		}
	}
}

 // Ueberblendungsfunktion - Beispiel fuer transparency(): http://Coding.binon.net/Transparenz
 // Parameter: Image-Objekt, neuer Image-URL, Transparenzschritt (optional - Default: 4),
 //            Wartezeit zw. den Schritten (in ms - optional - Default: 20ms),
 //            Funktion die nach der Ueberblendung aufgerufen wird (optional)
 function imgBlend(imgObj,imgURL,step,time,onBlend) {
	if(imgURL && !imgObj.blendTrans) {
		imgObj.blendStop=false;
		imgObj.blendTrans=100;
		imgObj.blendStep=(step)?step:4;
		imgObj.blendTime=(time)?time:30;
		if(onBlend) { imgObj.onBlend=onBlend; }
		imgObj.parentNode.style.background="url("+imgObj.src+") no-repeat";
		transparency(imgObj,imgObj.blendTrans);
		imgObj.lowsrc=imgObj.src;
		imgObj.src=imgURL;
		setTimeout(function() { imgBlend(imgObj); },imgObj.blendTime);
	} else if(!imgURL) {
		imgObj.blendTrans=Math.max(0,imgObj.blendTrans-imgObj.blendStep);
		if(imgObj.blendTrans>0 && !imgObj.blendStop) {
			transparency(imgObj,imgObj.blendTrans);
			setTimeout(function() { imgBlend(imgObj); },imgObj.blendTime);
		} else {
			imgObj.blendTrans=0;
			transparency(imgObj,0);
			imgObj.parentNode.style.backgroundImage="";
			if(imgObj.onBlend) { onBlend=imgObj.onBlend; imgObj.onBlend=null; onBlend(imgObj); }
		}
	}
 }

 // Abschlussfunktion (wird nach der Ueberblendung aufgerufen)
 function nextImage(imgObj) {
	var imgURL1 = imgObj.lowsrc;
	var imgURL2 = imgObj.src;
	if(imgObj.src.indexOf(imgURL1)>=0) {
		imgObj.onmouseover=function() { imgBlend(this,imgURL2,imgObj.blendStep,imgObj.blendTime,nextImage); }
	} else {
		imgObj.onmouseover=function() { imgBlend(this,imgURL1,imgObj.blendStep,imgObj.blendTime,nextImage); }
	}
 }

function MM_swapImgRestore()
{ //v3.0
	var doc = document;
  var i,x,a=document.MM_sr;
  var bTest = false;
  for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++)
  {
		if (doc.title == null)
		{
			bTest = true;
		}
		else
		{
			bTest = (a[i].name != doc.title);
		}
		if (bTest) {
			x.src=x.oSrc;
		}
  }
}

function MM_findObj(n, d) { //v3.0
  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); return x;
}

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

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 chkFormular()
{	
	if (document.Formular.Name.value.length <3) 
	{
		alert ("Bitte Namen eingeben!");
		document.Formular.Name.focus();
		return false;
	}
	if (document.Formular.Strasse.value.length <5) 
	{
		alert ("Bitte Strasse eingeben!");
		document.Formular.Strasse.focus();
		return false;
	}
	
	if (document.Formular.Ort.value.length <8) 
	{
		alert ("Bitte PLZ und Wohnort eingeben!");
		document.Formular.Ort.focus();
		return false;
	}
	
	if (document.Formular.Email.value.length <3) 
	{
			alert ("Bitte E-mail eingeben!");
			document.Formular.Email.focus();
			return false;
	}
	if (document.Formular.Tel.value.length <3) 
	{
			alert ("Bitte Telefon eingeben!");
			document.Formular.Tel.focus();
			return false;
	}
	return true;
}