// JavaScript Document

function resizeBgImg(){
	//document.getElementById("bgImg").style.height=100+"%";
	if(document.getElementById("bgImg").style.height>=800){
		document.getElementById("bgImg").style.height=100+"%";
	}
	if(document.getElementById("bgImg").style.height<=500){
		document.getElementById("bgImg").style.height=800+"px";
	}
}
//window.onresize = resizeBgImg();

var currnum=0;
var imgArr=new Array();
imgArr1=["img-galerie/schild1.jpg","img-galerie/groundplan_surounding.jpg","img-galerie/sk_1.jpg","img-galerie/sk_2.jpg","img-galerie/sk_3.jpg","img-galerie/sk_4.jpg","img-galerie/sk_5.jpg","img-galerie/sk_6.jpg","img-galerie/sk_7.jpg","img-galerie/sk_8.jpg"];
imgArr2=["img-galerie/BIrnen_stern.jpg","img-galerie/schalter_detail_low.jpg","img-galerie/birne-det_low.jpg"];
imgArr3=["img-galerie/Sky-5net.jpg","img-galerie/sky-6net.jpg","img-galerie/sky-9net.jpg","img-galerie/Sky-1net.jpg","img-galerie/sky-4net.jpg"];

function showImg(num,fwrd,imgArr,CurrImgBig) {
	if(fwrd==1) num++;
	if(fwrd==0) num--;
	if(num>imgArr.length-1 && fwrd==1){ 
		num=0;
	}
	if(num<0 && fwrd==0){
		num=imgArr.length-1;
	}
	/*var dummy = new Image;
	dummy = "pics/blue.gif";
	document.getElementById("ImgBig").src=dummy;*/
	var img = new Image;
	img = imgArr[num];
    if(imgArr[num] != "undefined") document.getElementById(CurrImgBig).src=img;
	currnum=num;
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

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
	document.getElementById("Galerie0").style.visibility="hidden";
	document.getElementById("Galerie1").style.visibility="hidden";
	document.getElementById("Galerie2").style.visibility="hidden";
	document.getElementById("Galerie3").style.visibility="hidden";
	document.getElementById("Galerie4").style.visibility="hidden";
	document.getElementById("Galerie5").style.visibility="hidden";
	document.getElementById("Galerie6").style.visibility="hidden";
	document.getElementById("Galerie7").style.visibility="hidden";
	document.getElementById("Galerie8").style.visibility="hidden";
  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; }
	currnum=0;
}

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_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];}
}

var testresults
function checkemail(){
	var str=document.kontaktform.meinmail.value
	var filter=/^(\w+(?:\.\w+)*)@((?:\w+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
	if (filter.test(str))
		testresults=true
	else{
		alert("Bitte eine gültige Email-Adresse eingeben!")
		testresults=false
	}
	return (testresults)
}

function eingegeben(){
	if (document.layers||document.getElementById||document.all)
		return checkemail()
	else
		return true
}