var aStyles = Array('small',null,'large','xLarge');

function setActiveStyleSheet(title) {
  var i, a, main;
  
  if (title == 'increase' || title == 'decrease') {
    for(i=0; i < aStyles.length; i++) {
      if (aStyles[i]==getActiveStyleSheet()) {
        if (title == 'increase' && i != aStyles.length-1) {
            title = aStyles[i+1];
            $('#ccff_resbar_plus_def').css("background-position", '0 0');
            $('#ccff_resbar_minus_def').css("background-position", '0 0');
            break;
        } else if (title == 'decrease' && i != 0) {
            title = aStyles[i-1];
            $('#ccff_resbar_plus_def').css("background-position", '0 0');
            $('#ccff_resbar_minus_def').css("background-position", '0 0');
            break;
        }
      }
    } 
    if (i == aStyles.length)  title=getActiveStyleSheet();
  }
    
  //Check if we need to change the icons
  if (title == 'xLarge') { $('#ccff_resbar_plus_def').css("background-position", '0 -70px'); } 
  else if (title == 'small') { $('#ccff_resbar_minus_def').css("background-position", '0 -70px'); }
    
  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;
}

ActiveStyleSheetonload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
};

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