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
  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; }
}

var testresults

function checkemail(){
 var str=document.kontakt.email.value
 var filter=/^.+@.+\..{2,3}$/

 if (filter.test(str))
    testresults=true
 else {
    alert("<?php echo $alert_str; ?>")
    testresults=false
}
 return (testresults)
}

function fenster(ziel) {
	// welche Datei ist gerade im Fenster geladen? 
		var URI = unescape(location.href)
		var fileN1 = URI.lastIndexOf("/") + 1
		var fileN2 = URI.length
		var file_name = URI.substring(fileN1,fileN2)
	// wenn der User dieden Link der geladenen Datei anklickt, wird diese nur sichtbar gemacht 
	if(file_name == ziel) { PopUpWin.focus(); } 
	else {
	// ansonsten neues Fenster 
		var PopUpWin;
		fensterLeft = screen.width-650
		PopUpWin=window.open(ziel, "Bild", "height=400,width=400,left="+fensterLeft+",top=20,resizable=no,scrollbars=no");
		if (PopUpWin.opener == null) {
         PopUpWin.opener = window;
     }
		 PopUpWin.opener.name = "Hauptseite"
		PopUpWin.focus();
	// win.setTimeout("window.close()",20000);
	}
}
	// für Links im Popup-Fenster, die wieder auf die Hauptseite führen 
	 function go(url) {
			 opener.location = url;
			 opener.focus();
	 }