function dropDown(dropElt) {
    var dropItems = document.getElementById(dropElt).getElementsByTagName('div');
    for (var i = 1; i < dropItems.length; i++) {
        dropItems.item(i).style.display = 'block';
    }
    var boxHeight = (dropItems.length - 1) * 22 + 30;
    document.getElementById(dropElt).style.height = boxHeight + 'px';
   <!-- document.getElementById(dropElt).style.border = 'solid 1px red'; -->
	document.getElementById(dropElt).style.width = 120 + 'px';
  }

  function dropUp(dropElt) {
    var dropItems = document.getElementById(dropElt).getElementsByTagName('div');
    for (var i = 1; i < dropItems.length; i++) {
        dropItems.item(i).style.display = 'none';
    }
    document.getElementById(dropElt).style.height = '30px';
    document.getElementById(dropElt).style.border = 'none';
  }