function init(){
    var kepek = document.getElementsByTagName("img");
    
    if(kepek.length != 0){
        for (i = 0; i < kepek.length; i++){
            if(kepek[i].className == 'middle') kepek[i].style.marginTop = Math.round((190 - kepek[i].height) / 2) + 'px';
        }
    }   
}

function setActiveStyleSheet(title) {
  var i, a, chooser;
  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;
    }
  }
  swapColorChanger(title);
  createCookie("style", title, 365);
}

function swapColorChanger(title){
var kk;
  chooser = document.getElementById('colorset');
  if(title == "light") chooser.src = chooser.src.replace(/light/,'dark');
  if(title == "dark") chooser.src = chooser.src.replace(/dark/,'light');
  kk = document.getElementById("colorlink");
  if(title == "light") kk.href = kk.href.replace(/light/,'dark');
  if(title == "dark") kk.href = kk.href.replace(/dark/,'light');
}

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;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  swapColorChanger(title);
  init();
}

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