function viz() {
  document.getElementById("cont").style.visibility = "visible"; 
  document.getElementById("cont").style.height = "1px"; 
}
function flip(act) {
 if (act == "show") {
  document.getElementById("cont").style.display = "block";
  document.getElementById("cont").style.height = "auto"; 
 } 
 else {
  document.getElementById("cont").style.display = "none";
  document.getElementById("cont").style.height = "1px";
 }
}