function back() {
        history.go(-1)
}
function stopError() {
return true;
}
window.onerror = stopError;

function changeFrame(navigation,main){
		if	(navigation!="") parent.navigation.location.href =  navigation
        if	(main!="") parent.main.location.href =  main  
}
var openextra;
function extra(url,fenster) {
openextra=window.open(url,fenster,'toolbar=0,locationbar=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,width=625,height=476,screenX=50,screenY=50,left=50,top=50');
openextra.focus(); 
}

var openextra1;
function extra1(url,fenster) {
openextra1=window.open(url,fenster,'toolbar=0,locationbar=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,width=450,height=375,screenX=50,screenY=50,left=50,top=50');
openextra1.focus(); 
}

var openextra2;
function extra2(url,fenster) {
openextra2=window.open(url,fenster,'toolbar=0,locationbar=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=650,height=400,screenX=50,screenY=50,left=50,top=50');
openextra1.focus(); 
}

var openextra3;
function extra3(url,fenster) {
openextra3=window.open(url,fenster,'toolbar=0,locationbar=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=650,height=400,screenX=50,screenY=50,left=50,top=50');
openextra1.focus(); 
}

var openbanner;
function banner(url,fenster) {
openbanner=window.open(url,fenster,'toolbar=0,locationbar=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=520,height=180,screenX=50,screenY=50,left=50,top=50');
openbanner.focus(); 
}

var openbanner2;
function banner2(url,fenster) {
openbanner2=window.open(url,fenster,'toolbar=0,locationbar=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=520,height=470,screenX=50,screenY=50,left=50,top=50');
openbanner.focus(); 
}

var opendruck;
function druck(url,fenster) {
openbanner=window.open(url,fenster,'toolbar=1,locationbar=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,width=650,height=500,screenX=50,screenY=50,left=50,top=50');
openbanner.focus(); 
}

var poppen;
function poppen(url,fenster) {
this.url=url;
more = window.open(url,fenster,'location=no,toolbar=no,menubar=no,status=no,scrollbars=no,width=240,height=140');
more.moveTo(50,50);
        if (navigator.appVersion.substring(1,0)>="3") {
        more.focus(); } }



function Seite_aufrufen ()

{
var index, inhalt;
 index=window.document.Webseiten.auswaehlen.selectedIndex;
 inhalt=window.document.Webseiten.auswaehlen.options[index].value;
parent.main.location.href=inhalt;

}





var openformu;
function formu(url,fenster) {
openformu=window.open(url,fenster,'toolbar=0,locationbar=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,width=625,height=450,screenX=50,screenY=50,left=50,top=50');
openformu.focus(); 
}

var openpassw;
function passw(url,fenster) {
openpassw=window.open(url,fenster,'toolbar=0,locationbar=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,width=440,height=395,screenX=50,screenY=50,left=50,top=50');
openpassw.focus(); 
}

 function print_main()
 {
 
	para_str=navigator.userAgent;
	para_ergebnis=para_str.search(/MSIE 4.0.+/);
	
	if(para_ergebnis != -1)
	{
		
		alert("Diese Funktion ist leider nicht mit dem Explorer 4 möglich!");
	
	} 
	else
	{
			
	print();
	}

 
 }



function surfto(form,fenster) {
	var myindex=document.myform.dest.selectedIndex
	{
		weitere=window.open(document.myform.dest.options[myindex].value,fenster,'toolbar=0,locationbar=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,width=400,height=350,screenX=50,screenY=50,left=50,top=50');
				
		}
	}

 function print()
 {
 
	para_str=navigator.userAgent;
	para_ergebnis=para_str.search(/MSIE 4.0.+/);
	
	if(para_ergebnis != -1)
	{
		
		alert("Diese Funktion ist leider nicht mit dem Explorer 4 möglich!");
	
	} 
	else
	{
			
	print();
	}

 
 }