function setSessionTrackingId() {
  var id=getCookie('SessionTrackingId',null);

  if (id==null | id==0) {
    var exp=new Date(); 
    exp.setTime(exp.getTime()+(10*365*24*60*60*1000)); 

    var dt=new Date();
    var i=Math.random()*1000;
    id=dt.getTime().toString()+i.toString();
  
    setCookie('/','SessionTrackingId',id,exp.toGMTString());
  }
}

function setSessionTrackingStart() {
  var start=getCookie('SessionTrackingStart',null);
  if (start==null) {
    var start=new Date();
    setCookie('/','SessionTrackingStart',start.getTime());
  }
}