function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(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").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").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;
}
/*font sizer
function increaseFont(){
  var x;
  if (document.all && document.all.body.style.getAttribute) {
    x = document.all.body.style.setAttribute("fontSize")= 
     } else if (document.getElementById) {
    x = document.getElementById("body").style.fontSize;
  }
  alert(x);
}

*/
function setFontSize(ev, percentage, prevent)
{
   
	currentSize = percentage;
	document.getElementsByTagName("body")[0].style.fontSize = currentSize + '%';

	if (window.event) {
	    window.event.returnValue = false;
	} else {
	    ev.preventDefault();
	
    }
}

function decreaseFontSize(ev)
{
    setFontSize(ev, currentSize / 1.13, true);
}
function defaultFontSize(ev)
{
    setFontSize(ev, 80, true);
}
function increaseFontSize(ev)
{
    
    setFontSize(ev, currentSize * 1.13, true);
}
window.onload = function(e) {
  var cookie = readCookie("kultur_style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
  var currentSize = 80;
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("kultur_style", title, 365);
  }

var cookie = readCookie("kultur_style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);
var currentSize = 80;