var enabletabpersistence = 1;
var tabcontentIDs = new Object();

function expandcontent(linkobj) {
  var ulid = linkobj.parentNode.parentNode.id;
  var ullist = document.getElementById(ulid).getElementsByTagName("li");
  for(var i=0; i<ullist.length; i++) {
    ullist[i].className="";
    if(typeof tabcontentIDs[ulid][i] != "undefined") {
      document.getElementById(tabcontentIDs[ulid][i]).style.display = "none";
    }
  }
  linkobj.parentNode.className = "selected";
  document.getElementById(linkobj.getAttribute("rel")).style.display = "block";
  saveselectedtabcontentid(ulid,linkobj.getAttribute("rel"));
}

function expandtab(tabcontentid,tabnumber) {
  var thetab = document.getElementById(tabcontentid).getElementsByTagName("a")[tabnumber];
  if(thetab.getAttribute("rel")) {
    expandcontent(thetab);
  }
}

function savetabcontentids(ulid,relattribute) {
  if(typeof tabcontentIDs[ulid] == "undefined") {
    tabcontentIDs[ulid] = new Array();
  }
  tabcontentIDs[ulid][tabcontentIDs[ulid].length] = relattribute;
}

function saveselectedtabcontentid(ulid,selectedtabid) {
  if(enabletabpersistence == 1) {
    setCookie(ulid,selectedtabid);
  }
}

function getullistlinkbyId(ulid,tabcontentid) {
  var ullist = document.getElementById(ulid).getElementsByTagName("li");
  for(var i=0; i<ullist.length; i++) {
    if(ullist[i].getElementsByTagName("a")[0].getAttribute("rel") == tabcontentid) {
      return ullist[i].getElementsByTagName("a")[0];
      break;
    }
  }
}

function initializetabcontent(ulid) {
  for(var i=0;i<arguments.length;i++) {
    if(ulid != 'headerlinks') {
      setCookie(arguments[i],"");
    }
    var clickedontab = getCookie(arguments[i]);
    var ulobj = document.getElementById(arguments[i]);
    var ulist = ulobj.getElementsByTagName("li");
    for(var x=0; x<ulist.length; x++) {
      var ulistlink=ulist[x].getElementsByTagName("a")[0]
      if(ulistlink.getAttribute("rel")) {
        savetabcontentids(arguments[i],ulistlink.getAttribute("rel"));
        ulistlink.onclick = function() {
          expandcontent(this);
        return false;
      }
      if(ulist[x].className == "selected" && clickedontab == "")
        expandcontent(ulistlink);
      }
    }
    if(clickedontab != "") {
      var culistlink=getullistlinkbyId(arguments[i],clickedontab);
      if(typeof culistlink != "undefined") {
        expandcontent(culistlink)
      } else {
        expandcontent(ulist[0].getElementsByTagName("a")[0]);
      }
    }
  }
}

function getCookie(Name) {
  var re = new RegExp(Name+"=[^;]+","i");
  if(document.cookie.match(re)) {
    return document.cookie.match(re)[0].split("=")[1];
  }
  return "";
}

function setCookie(name,value) {
  document.cookie = name+"="+value;
}