//This file contains all the functions to set and read a cookie that switches our CSS to make the
//layout either fixed-width or liquid.

function checkForCookie(){
  var cookie = readCookie("style");
  var title = cookie;
  setActiveStyleSheet(title);
  }

  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;
}

  //setup initialisation function
  //.. gecko, safari, konqueror and generic
  if(typeof window.addEventListener != 'undefined')
  {
  //window.addEventListener('load', checkForCookie, false);
  document.addEventListener('DOMContentLoaded', checkForCookie, false);
  }
  //.. opera 7
  else if(typeof document.addEventListener != 'undefined')
  {
  document.addEventListener('load', checkForCookie, false);
  }
  //.. win/ie
  else if(typeof window.attachEvent != 'undefined')
  {
  window.attachEvent('onload', checkForCookie);
  }

  function setActiveStyleSheet(title) {
  
    var i, a, main;
    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 && title != "Default"){
          a.disabled = false;
          createCookie("style", title);
          
          //We need to check for IE 7 and feed it a stylesheet with some tweaks
          if (navigator.userAgent.toLowerCase().indexOf("ie 7") != -1){
            var head = document.getElementsByTagName("head")[0];
            var ie7link=document.createElement('link');
            ie7link.setAttribute('rel','stylesheet');
            ie7link.setAttribute('type','text/css');
            ie7link.setAttribute('href','/CSS/ie7liquid.css');
            ie7link.setAttribute('media','screen');
            ie7link.setAttribute('id','ie7Link');
            head.appendChild(ie7link);
            }
          else if (navigator.userAgent.toLowerCase().indexOf("ie 6") != -1){
            var head = document.getElementsByTagName("head")[0];
            var ie7link=document.createElement('link');
            ie7link.setAttribute('rel','stylesheet');
            ie7link.setAttribute('type','text/css');
            ie7link.setAttribute('href','/CSS/ie6liquid.css');
            ie7link.setAttribute('media','screen');
            ie7link.setAttribute('id','ie6Link');
            head.appendChild(ie7link);          
          }
        }
      }
      else if(title == "Default"){
        eraseCookie("style");
        var ie7Node = document.getElementById("ie7Link");
        if (ie7Node != null){
            document.getElementsByTagName("head")[0].removeChild(ie7Node);
        }
        var ie6Node = document.getElementById("ie6Link");
        if (ie6Node != null){
            document.getElementsByTagName("head")[0].removeChild(ie6Node);
        }
    }
    }
  }

  function createCookie(name,value) {
    document.cookie = name+"="+value+"; path=/";
  }

function getStyle(id){
    var styleName = document.getElementById(id).options[document.getElementById(id).selectedIndex].value;
    if (styleName != "choose"){
	    setActiveStyleSheet(styleName);
	}
  }

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