//Stylesheet switching, Thanks to A List Apart http://www.alistapart.com

function setActiveStyleSheet(title) {
  var i, a, main;
  if(String(title).substring(0,5)=='Kirja'){
   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;
}

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 openVG(osoite){
        var maxX=screen.width;
        var maxY=screen.height;
        var w=800;
        var h=620;
        var windowprops = 'width='+w+',height='+h+',location=no,scrollbars=no,toolbar=no,resizable=no,status=no,screenX='+(maxX-w)/2+',screenY='+(maxY-h)/2+',left='+(maxX-w)/2+',top='+(maxY-h)/2;
        imageWindow=window.open(osoite, '', windowprops);
	if (window.focus) {imageWindow.focus()} //First we check whether the focus() method is supported  — this is vital to stop JavaScript errors. If it is, we set the browser's focus on the new window, so that as soon as it is affected it is at the front of the display.
}

function showHide(elementid){
    if (document.getElementById(elementid).style.display == 'none'){
        document.getElementById(elementid).style.display = '';
    } else {
        document.getElementById(elementid).style.display = 'none';
    }
}