function tabChange( tab,name,value ){
  var list_tab_id = 'list_' + tab;

  var elementTab = document.getElementById('advice_tab');

  for (i = 0 ; i < elementTab.childNodes.length; i++){
    if(elementTab.childNodes[i].id == tab){
        elementTab.childNodes[i].className = "here";
    } else {
        elementTab.childNodes[i].className = "";
    }
  }

  var oElementList = document.getElementById('advice_list');

  for (j = 0 ; j < oElementList.childNodes.length; j++){
    if(oElementList.childNodes[j].id ){
      if(oElementList.childNodes[j].id == list_tab_id ){
        oElementList.childNodes[j].style.display = "";
      } else {
        oElementList.childNodes[j].style.display = "none";
      }
    }
  }

  expires = "";
  document.cookie = name+"="+value+expires+"; path=/";

  return;
}

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 tab_onload(){
  var value = readCookie("tab_name");
  if(value){
    var tab = 'advice_' + value;
    tabChange(tab,"tab_name",value);
  }
}


window.onload = function(e) {

  tab_onload();
}