/**
  * Launches a pop-up window
  */
function launchPopup(url, name, width, height, resizable, scrollbars, toolbar, location) {
  popup_window = window.open(url, name, 'width='+width+',height='+height+',resizable='+resizable+',scrollbars='+scrollbars+',toolbar='+toolbar+',location='+location+'');
  popup_window.focus();
  return true;
}
  
/**
  * Creates hover behaviour in Exploder
  */
function startMenuHover() {
  if (document.all && document.getElementById && (navigator.userAgent.indexOf("Opera") == -1)) {
    root = document.getElementById("menu");
    navRoot = root.all.tags("LI");
    for (i=0; i < navRoot.length; i++) {
      node = navRoot[i];
      if (node.nodeName == "LI") {
        node.onmouseover=function() {
          this.className += " over";
        }
        node.onmouseout=function() {
          this.className=this.className.replace (" over", "");
        }
      }
    }
  }
}


/*** CSS Switcher **************************************************************/

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) 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 + ";domain=independent.co.uk;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 checkForCookie(){
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  
  var column = readCookie("columns");
  if (column == "oneColumn") {
    oneColumn();
  }
  if (column == "twoColumns") {
    twoColumns();
  }
} 

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 100);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);
/************************************************************* CSS Switcher ***/