/***
Styleswitcher - http://www.alistapart.com/articles/alternate/
AKTIA Modifications (c) Riku Mäkinen, Logica 2009
***/

function setActiveStyleSheet(title) {
  var i, a;
  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;
    }
  }
  if(parseInt(title) <= 0) {
    var zo = document.getElementById("zoom-out");
    zo.className = 'zoom-out-disabled';
  } else if(parseInt(title) >= 3) {
    var zi = document.getElementById("zoom-in");
    zi.className = 'zoom-in-disabled';
  }
}

function setActiveStyleSheetUp() {
  var a = parseInt(getActiveStyleSheet());
  if(a+1 < 3) {
    setActiveStyleSheet(a+1);
	var zo = document.getElementById("zoom-out");
    zo.className = 'zoom-out';
  } else if(a+1 == 3) {
    setActiveStyleSheet(a+1);
    var zi = document.getElementById("zoom-in");
    zi.className = 'zoom-in-disabled';
  } else {
    var zi = document.getElementById("zoom-in");
    zi.className = 'zoom-in-disabled';
  }
}

function setActiveStyleSheetDown() {
  var a = parseInt(getActiveStyleSheet());
  if(a-1 > 0) {
    setActiveStyleSheet(a-1);
	var zi = document.getElementById("zoom-in");
    zi.className = 'zoom-in';
  } else if(a-1 == 0) {
    setActiveStyleSheet(a-1);
    var zo = document.getElementById("zoom-out");
    zo.className = 'zoom-out-disabled';
  } else {
    var zo = document.getElementById("zoom-out");
    zo.className = 'zoom-out-disabled';
  }
}

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);
  LocaleSelectionPopup_IE6();
}

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

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);

function LocaleSelectionPopup_IE6() {}