anchor.diff:  
     function showPopup(id) {
        $("#popup").slideToggle();
  +     $("#simple").slideToggle();
   
     };
   
  
positive.code: <%= text_field_tag "position[]", nil, placeholder: "Web Developer" %>
  <%= submit_tag("Search") %>
  <% end %>
  <div id="popup" class="popup">
  <%= form_tag("/search", method: "get") do %>
  <%= label_tag(:location, "Your location") %>
  
negative.code:     position:absolute;
      top:50%;
      left:50%;
      margin:-100px 0 0 -100px; /* [-(height/2)px 0 0 -(width/2)px] */
      display:none;
    }
  </style>
  