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 var expires = "";
       document.cookie = name+"="+value+expires+"; path=/; domain=hema.nl";
}
if (location.search.indexOf("gclid") > -1)
{
  createCookie("network", "adwords", 30);
}
if (location.search.indexOf("utm_source") > -1)
{
  var search = location.search.substr(location.search.indexOf("utm_source") + 11);
  search = search.split("&")[0];
  search = search.toLowerCase();
  createCookie("network", search, 7);
}