function pageLoad() {
  var elem;
  if (document.URL.indexOf("/main/") >= 0) { elem="home_a"; } else { document.getElementById("home_a").className="none"; }
  if (document.URL.indexOf("/services/") >= 0) { elem="service_a"; } else { document.getElementById("service_a").className="none"; }
  if (document.URL.indexOf("/sampling/") >= 0) { elem="sampling_a"; } else { document.getElementById("sampling_a").className="none"; }
  if (document.URL.indexOf("/fungi/") >= 0) { elem="fungi_a"; } else { document.getElementById("fungi_a").className="none"; }
  if (document.URL.indexOf("/store/") >= 0) { elem="store_a"; } else { document.getElementById("store_a").className="none"; }
  if (document.URL.indexOf("/lab/") >= 0) { elem="lab_a"; } else { document.getElementById("lab_a").className="none"; }
  if (document.URL.indexOf("/about/") >= 0) { elem="about_a"; } else { document.getElementById("about_a").className="none"; }
  if (document.URL.indexOf("/contact/") >= 0) { elem="contact_a"; } else { document.getElementById("contact_a").className="none"; }
  if (elem) { document.getElementById(elem).className="current"; }
}

function pageUnload() {
  document.getElementById("home_a").className="";
  document.getElementById("service_a").className="";
  document.getElementById("sampling_a").className="";
  document.getElementById("fungi_a").className="";
  document.getElementById("store_a").className="";
  document.getElementById("lab_a").className="";
  document.getElementById("about_a").className="";
  document.getElementById("contact_a").className="";
}