function changeFontSize() { 
    if(document.getElementById('fontsize').href.indexOf("largest") != -1 )
  {
   document.getElementById( 'fontsize').href ='_public/Idebanken/styles/font_normal.css';
  }
   else if(document.getElementById('fontsize').href.indexOf("normal") != -1 ){
       document.getElementById( 'fontsize').href ='_public/Idebanken/styles/font_large.css';
   }
   else {
      document.getElementById( 'fontsize').href ='_public/Idebanken/styles/font_largest.css';
      }
}

function setFontSize(size){
   document.getElementById( 'fontsize').href ='_public/Idebanken/styles/font_'+size+'.css';
}

function changeContrast() {
    if(document.getElementById('contrast').href.indexOf("empty") != -1 )
  {
   document.getElementById( 'contrast').href ='_public/Idebanken/styles/blackonwhite.css';
  }
   else if(document.getElementById('contrast').href.indexOf("blackonwhite") != -1 ){
       document.getElementById( 'contrast').href ='_public/Idebanken/styles/whiteonblack.css';
   }
   else {
      document.getElementById( 'contrast').href ='_public/Idebanken/styles/empty.css';
      }
}

function setActiveStyleSheet(contrast, fontsize) {
 document.getElementById( 'contrast').href ='_public/Idebanken/styles/'+contrast+'.css';
 document.getElementById( 'fontsize').href ='_public/Idebanken/styles/font_'+fontsize+'.css';
}

function getActiveContrast(){
   var contrast = document.getElementById( 'contrast').href;
   if(contrast.indexOf('blackonwhite') != -1) return 'blackonwhite'
   else if(contrast.indexOf('whiteonblack') != -1) return 'whiteonblack'
   else return 'empty'
}

function getActiveFontsize(){
   var contrast = document.getElementById( 'fontsize').href;
   if(contrast.indexOf('largest') != -1) return 'largest'
   else if(contrast.indexOf('large') != -1) return 'large'
   else return 'normal'
}

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 cookiec = readCookie("contrast");
  var contrast= cookiec ? cookiec : 'empty'
 var cookief = readCookie("fontsize");
  var fontsize = cookief ? cookief : 'normal'
  setActiveStyleSheet(contrast, fontsize);
}

window.onunload = function(e) {
  var contrast= getActiveContrast();
  var fontsize= getActiveFontsize();
  createCookie('contrast', contrast, 365);
  createCookie('fontsize', fontsize,365);
}

  var cookiec = readCookie("contrast");
  var contrast= cookiec ? cookiec : 'empty'
 var cookief = readCookie("fontsize");
  var fontsize = cookief ? cookief : 'normal'
  setActiveStyleSheet(contrast, fontsize);