// JavaScript Document
function viz() {
 document.getElementById("cont").style.visibility = "hidden";
 
 
}
function showLayer(act) {
 if (act == "show") {
  document.getElementById("cont").style.visibility = "visible";
  document.getElementById("more").style.visibility = "hidden";
  document.getElementById("less").style.visibility = "visible";
 

 
 } else {
  document.getElementById("cont").style.visibility = "hidden";
  document.getElementById("more").style.visibility = "visible";
  document.getElementById("less").style.visibility = "hidden";

 }
}