function popup(w,h,ziel) {
  h = h - 20; var x=0, y=0, parameter="";
  if (w < screen.availWidth || h < screen.availHeight) {
    x = (screen.availWidth - w - 12) / 2;
    y = (screen.availHeight - h - 104) / 2;
    if (window.opera) y = 0; // Opera positioniert unter den Symbolleisten
    if (x<0 || y<0) { x=0; y=0; }
    else parameter = "width=" + w + ",height=" + h + ",";
  }
  parameter += "left=" + x + ",top=" + y;
  parameter += ",menubar=0,location=0,toolbar=0,status=0";
  parameter += ",resizable=1,scrollbars=1";
  var Fenster = window.open(ziel,"",parameter);
  if (Fenster) Fenster.focus();
  return !Fenster;
}

function change_az_content(issue_node_id) {
    $("#a-z-content").hide();
    $("#a-z-loader").show();
    $.get( "/layout/set/blank/content/view/full/113/(ajax)/" + issue_node_id, function(txt){
        $("#a-z-content").html(txt);
        $("#a-z-loader").hide();
        $("#a-z-content").show();            
    });
}

function change_redirect(url1, url2)
{
	if (document.anmeldung_newsletter.operation.value == "unsubscribe")
	{
		document.getElementById("nlRedirect").innerHTML = '<input type="hidden" value="'+url1+'" name="redirect">';
	}
	else
	{
		document.getElementById("nlRedirect").innerHTML = '<input type="hidden" value="'+url2+'" name="redirect">';
	}
}
function pflichtfelder()
{
	if (document.anmeldung_newsletter.emailadresse.value == "")
	{
		alert("Bitte tragen Sie Ihre E-Mail-Adresse ein!");
		document.anmeldung_newsletter.emailadresse.focus();
		return false;
	}
}