function switch_fonts() {
  if( 'Default Style' == getActiveStyleSheet() ) {
    setActiveStyleSheet('Big Fonts');
    return false;
  } else {
    setActiveStyleSheet('Default Style');
    return false;
  }
}

function setActiveStyleSheet(title) {
  var i, a, main;
  for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if (a.getAttribute("rel") &&
        a.getAttribute("rel").indexOf("style") != -1 &&
        a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}
function getActiveStyleSheet() {
  var i, a;
  for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if (a.getAttribute("rel") &&
        a.getAttribute("rel").indexOf("style") != -1 &&
        a.getAttribute("title") &&
        !a.disabled
        ) return a.getAttribute("title");
  }
  return null;
}
function getPreferredStyleSheet() {
  var i, a;
  for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if (a.getAttribute("rel") &&
        a.getAttribute("rel").indexOf("style") != -1 &&
        a.getAttribute("rel").indexOf("alt") == -1 &&
        a.getAttribute("title")
        ) return a.getAttribute("title");
  }
  return null;
}
function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}
function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}
window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}
window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);


function preload_images() {

  images = new Array(6);

  images[0] = new Image();
  images[0].src = 'images/angebote_aktiv.gif';
  images[1] = new Image();
  images[1].src = 'images/heimbeirat_aktiv.gif';
  images[2] = new Image();
  images[2].src = 'images/home_aktiv.gif';
  images[3] = new Image();
  images[3].src = 'images/kontakt_aktiv.gif';
  images[4] = new Image();
  images[4].src = 'images/team_aktiv.gif';
  images[5] = new Image();
  images[5].src = 'images/ueberuns_aktiv.gif';
  images[6] = new Image();
  images[6].src = 'images/schrift_groesser_aktiv.gif';

}


function swap_nav(id, bild) {
  document.getElementById(id).src='images/nav-leiste/' + bild;
}

function team_aktiv(id) {
  document.getElementById(id).style.color='#FFF';
}

function team_inaktiv(id) {
  document.getElementById(id).style.color='#339';
}

function anfahrtsskizze() {

  var win = window.open("texte/kontakt/anfahrtsskizze.html", "Anfahrtsskizze", "innerHeight=594,innerWidth=601,height=594,width=601resizable=No,status=No,scrollbars=No,titlebar=No,toolbar=No");

}

function video() {

  var win = window.open("texte/video.html", "Videofilm", "innerHeight=600,innerWidth=400,resizable=No,status=No,scrollbars=No,titlebar=No,toolbar=No");

}

function stream() {

  var win = window.open("./texte/stream.html", "Videostream", "innerHeight=600,innerWidth=800,height=700,width=800,resizable=Yes,status=No,scrollbars=Yes,titlebar=No,toolbar=No");

}