function browserabfrage() // aktuell
{

    // convert all characters to lowercase to simplify testing
    var agt=navigator.userAgent.toLowerCase();
    // *** BROWSER VERSION ***
    // Note: On IE5, these return 4, so use is_ie5up to detect IE5.
    var is_major = parseInt(navigator.appVersion);
    var is_minor = parseFloat(navigator.appVersion);


    var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
    var is_nav4down = (is_nav &&(is_major <= 4));
    var is_nav6 = (is_nav && (is_major >= 5) && (agt.indexOf('netscape6')!=-1));	
    var is_nav7 = (is_nav && (is_major >= 5) && (agt.indexOf('netscape/7')!=-1));	
	
    var is_opera = (agt.indexOf("opera") != -1);
	var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
	
	var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
    var is_ie3    = (is_ie && (is_major < 4));
    var is_ie4    = (is_ie && (agt.indexOf("msie 4")!=-1));
    var is_ie5    = (is_ie && (agt.indexOf("msie 5.0")!=-1));
    var is_ie5_5  = (is_ie && (agt.indexOf("msie 5.5") !=-1));
    var is_ie6    = (is_ie && (agt.indexOf("msie 6")!=-1));
    var is_ie6up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5 && !is_ie5_5 && !is_ie6);
	
	if(is_ie6) ie=true; 
	else ie=false;
    
	if(is_opera) opera=true;
	else opera=false;
	
	if(is_nav6)  nav6=true;
	else nav6=false;
	
	if(is_nav7)  nav7=true;
	else nav7=false;
	
	if(is_ie5) ie5=true;
	else ie5=false;

	if(is_ie5_5) ie5=true;
	else ie5=false;


/*
	if(is_nav)
	{
	 if(is_nav4down)document.write("Netscape 4 oder kleiner ...");
	 if(is_nav6)document.write("Netscape 6");
	 if(is_nav7)document.write("Netscape 7");
	}
	else if(is_opera)
	{
	 if(is_opera5)document.write("Opera 5");
	}
	else if(is_ie)
	{
     if(is_ie3)document.write("Internet Explorer 3");
	 if(is_ie4)document.write("Internet Explorer 4");  
     if(is_ie5)document.write("Internet Explorer 5");
	 if(is_ie5_5)document.write("Internet Explorer 5_5");
     if(is_ie6)document.write("Internet Explorer 6");
     if(is_ie6up)document.write("Internet Explorer 6+");
	}
*/

  if (is_nav4down)
  {
  	top.location.href="./nav4.html";
  }
/*
  else if (is_nav6)
  {
   top.location.href="./nav6.html";
  }

  else if (is_opera)
  {
   top.location.href="./opera.html";
  }
*/
}



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; }
}

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_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_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];}
}