<div id="dd" class="wrapper-dropdown-5" tabindex="1">Nerozhoduje
               <ul class="dropdown">
                   <li><a href="#">Profile</a></li>
                   <li><a href="#">Settings</a></li>
                   <li><a href="#">Log out</a></li>
               </ul>
          </div>

Akce pro zmíněný html kód - třídu a ID.
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function DropDown(el) {
				this.dd = el;
				this.placeholder = this.dd.children('span');
				this.opts = this.dd.find('ul.dropdown > li');
				this.val = '';
				this.index = -1;
				this.initEvents();
			}
			DropDown.prototype = {
				initEvents : function() {
					var obj = this;

					obj.dd.on('click', function(event){
						$(this).toggleClass('active');
						return false;
					});

					obj.opts.on('click',function(){
						var opt = $(this);
						obj.val = opt.text();
						obj.index = opt.index();
						obj.placeholder.text(obj.val);
					});
				},
				getValue : function() {
					return this.val;
				},
				getIndex : function() {
					return this.index;
				}
			}

			$(function() {

				var dd = new DropDown( $('#dd') );

				$(document).click(function() {
					// all dropdowns
					$('.wrapper-dropdown-5').removeClass('active');
				});

			})