function viz() {
  if( document.getElementById("cont"))
  {
  document.getElementById("cont").style.visibility = "hidden"; 
  document.getElementById("cont").style.height = "1px";
  } 
}
function flip(act) {
 if (act == "show") {
 if( document.getElementById("cont"))
 {
  document.getElementById("cont").style.visibility = "visible";
  document.getElementById("cont").style.height = "auto";
  } 
 } 
 else {
 if( document.getElementById("cont"))
 {
  document.getElementById("cont").style.visibility = "hidden";
  document.getElementById("cont").style.height = "1px";
  }
 }
}