// This script based on Paul Snowden's work described on A List Apart
//  <http://www.alistapart.com/stories/alternate/>
// Certain modifications (setFontSize and related) by Eric Meyer
//  <http://www.meyerweb.com/eric/>

function setActiveStyleSheet(title) {
  var i, a, main;
  if (title) {
    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;
        }
      }
    }
    createCookie('XanderZone-Story-themeName', title, 365);
  }
}

function block18(value) {
  if (value) {
    createCookie('XanderZone-StoryIndex-Block18', value, 365);
  }
}

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;
}

function eraseCookie(name) {
  createCookie(name,'',-1);
}