function welche_bezahlungs_art(){
	var zahlungs_art = document.getElementById("rechnung_zahlungsart")[document.getElementById("rechnung_zahlungsart").selectedIndex].text
    if (zahlungs_art == "Rechnung"){
		document.getElementById("zahlungs_art_zusatz_optionen").style.display = "block";

		//abholung
		if ( document.getElementById("rechnung_zahlungsart_zusatz_1").checked == true ) {
			document.getElementById("alternative_lieferadresse").style.display = "none";
			
		}
		//lieferung
		else{
			document.getElementById("alternative_lieferadresse").style.display = "block";
		}
	}
	else{
		document.getElementById("zahlungs_art_zusatz_optionen").style.display = "none";
		document.getElementById("alternative_lieferadresse").style.display = "none";
	}
}

function welche_rechnungsart(zusatz){
	if (zusatz == "rechnung_abholung"){
		document.getElementById("zahlungs_art_zusatz_hinweis").style.display = "none";
		document.getElementById("alternative_lieferadresse").style.display = "none";
	}
	else{
		document.getElementById("zahlungs_art_zusatz_hinweis").style.display = "block";
		document.getElementById("alternative_lieferadresse").style.display = "block";
	}
}

function ResetScrollPosition(xxx){
	//alert(xxx);
	//var xxx = document.body.scrollTop;
	//window.scroll(0,xxx);
}






//================================================== ===
// Scrolling
//================================================== ===
// Call this from the body onload on each postback in
// order to preserve the body's scroll position.
function restoreScrollPos()
{
// copy references to form's submit and onsubmit methods
document.forms[0].doSubmit1 = document.forms[0].onsubmit;
document.forms[0].doSubmit2 = document.forms[0].submit;
// change references to proprietary methods
document.forms[0].onsubmit = saveScrollPos1;
document.forms[0].submit = saveScrollPos2;
//recover the previous scroll poition from the cookie
var posX = parseInt(getCookie("scrollPosX"));
var posY = parseInt(getCookie("scrollPosY"));
//destroy the cookie
deleteCookie("scrollPosX");
deleteCookie("scrollPosY");
//scroll to the recovered position
window.scroll(posX, posY);

return true;
}
//save the scroll poition to the cookie (set expire to small value)
function saveScrollPos()
{
var expiry = new Date();
expiry.setSeconds(expiry.getSeconds() + 10);
setCookie("scrollPosX", window.document.body.scrollLeft, expiry);
setCookie("scrollPosY", window.document.body.scrollTop, expiry);
}

function saveScrollPos1()
{
saveScrollPos();
document.forms[0].doSubmit1();
}

function saveScrollPos2()
{
saveScrollPos();
document.forms[0].doSubmit2();
}

//================================================== ===
// Cookies
//================================================== ===
function setCookie(name, value, expires, path, domain, secure)
{
var curCookie = name + "=" + escape(value) +
((expires) ? "; expires=" + expires.toGMTString() : "") +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
((secure) ? "; secure" : "");

document.cookie = curCookie;
}

function getCookie(name)
{
var dc = document.cookie;
var prefix = name + "=";
var begin = dc.indexOf("; " + prefix);

if (begin == -1)
{
begin = dc.indexOf(prefix);
if (begin != 0)
return null;
}
else
begin += 2;

var end = document.cookie.indexOf(";", begin);

if (end == -1)
end = dc.length;

return unescape(dc.substring(begin + prefix.length, end));
}

function deleteCookie (name)
{
var exp = new Date();
exp.setTime (exp.getTime() - 1);
// This cookie is history
var cval = getCookie (name);
document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}