function setDisplay() {
  var object2 = document.getElementById('about');
  object2.style.display ='none';
  var object = document.getElementById('news');
  object.style.display ='none';
  var object2 = document.getElementById('research');
  object2.style.display ='none';
  var object2 = document.getElementById('link');
  object2.style.display ='none';
} 


function showSubnav(subnavtype) {
  var object = document.getElementById(subnavtype);
  if (object.style.display =='block') {
	object.style.display ='none'; 
  } else {
    object.style.display ='block';
  }
}
    
function hideSubnav() {
  var object2 = document.getElementById('about');
  object2.style.display ='none';
    var object = document.getElementById('news');
    object.style.display ='none';
  	var object2 = document.getElementById('research');
  object2.style.display ='none';
    var object2 = document.getElementById('link');
    object2.style.display ='none';
}