function display (category) {
  var whichcategory = document.getElementById(category);
  if (whichcategory.className=="show") {
    whichcategory.className="hide";
  } else {
    whichcategory.className="show";
  }
}

function display_search (box) {
  var box_a = document.getElementById(box+'_a');
  var box = document.getElementById(box);
  
  var box1 = document.getElementById('search_box1');
  var box2 = document.getElementById('search_box2');
  var box3 = document.getElementById('search_box3');
  var box4 = document.getElementById('search_box4');
  
  box1.className = "hide";
  box2.className = "hide";
  box3.className = "hide";
  box4.className = "hide";
  
  var box1_a = document.getElementById('search_box1_a');
  var box2_a = document.getElementById('search_box2_a');
  var box3_a = document.getElementById('search_box3_a');
  var box4_a = document.getElementById('search_box4_a');
  
  box1_a.className = "noact";
  box2_a.className = "noact";
  box3_a.className = "noact";
  box4_a.className = "noact";
  
  if (box.className == "show") {
    box.className = "hide";
    box_a.className = "noact";
  } else {
    box.className = "show";
    box_a.className = "act";
  }
}