/* Toggle Search Visibility */
function toggle_visibility(id) {
   var e = document.getElementById(id);
   if(e.style.display == 'block')
	  e.style.display = 'none';
   else
	  e.style.display = 'block';
}

function visibility_on(id) {
   var e = document.getElementById(id);
   e.style.display = 'block';
}

function visibility_off(id) {
   var e = document.getElementById(id);
  e.style.display = 'none';
}