// Byt mellan olika teckenstorlekar

function getSize() {
  if(size = readCookie("fontsize")) {
  	return size;
  } else {
    return '76%';
  }
}

function setSize(temp) {
  var i, a, temp;
  if (!temp) temp = getSize();
  for (i=0; (a = document.getElementsByTagName("body")[i]); i++) {
    document.getElementsByTagName("body")[i].style.fontSize = temp;
  }
  createCookie("fontsize", temp, 365);
}

function storLiten() {
  var temp;
  temp = getSize();
  if (temp == "85%") temp = "76%";
  else temp = "85%";
  setSize(temp);
}

// Skriv ut

function printArticle() {
  result = confirm('Hej! Denna artikel \344r anpassad f\366r att skrivas ut bra direkt, utan att du beh\366ver g\345 till en separat sida. Utskriften kommer att bli i svartvitt, utan sidhuvud, menyer eller navigering. Vill du forts\344tta?');
  if (result) window.print();
}

// Styleswitcher

function setActiveStyleSheet(title) {
  var i, a, main;
  if (document.getElementsByTagName) {
    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;
  if (document.getElementsByTagName) {
    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;
  if (document.getElementsByTagName) {
    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;
}

// OnLoad that works in IE5/Mac. Kudos to Simon Willison.

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function addUnLoadEvent(func) {
  var oldonunload = window.onunload;
  if (typeof window.onunload != 'function') {
    window.onunload = func;
  } else {
    window.onunload = function() {
      oldonunload();
      func();
    }
  }
}

addLoadEvent(function(e) {
  var cookie = readCookie("style");
  var size = readCookie("fontsize");
  var title = cookie ? cookie : getPreferredStyleSheet();
  var fontsize = size ? size : getSize();
  setActiveStyleSheet(title);
  setSize(size);
// purp() finns i plinks.js
//  if ('hasPurp' in window) {
//    purp(window.document.getElementById('col1'));
//  }
});
addUnLoadEvent(function(e) {
  var title = getActiveStyleSheet();
  var size = getSize();
  createCookie("style", title, 365);
  createCookie("fontsize", size, 365);
});