anchor.diff:                  <div class="tab-pane fade" id="edit" role="tabpanel" aria-labelledby="edit-tab">
                       <h3>Edit subscriber</h3>
                       <div id="edit_alerts"></div>
  -<%--
  -                    <form method="POST" id="edit_subscr_form" action="">
  -                        <div class="input-group">
  -                            <label for="editemail">Email</label>
  -                            <p><input type="email" id="editemail" readonly class="form-control"/></p>
  -                            <label for="editname">Name</label>
  -                            <p><input type="text" id="editname" required class="form-control"/></p>
  -                            <label for="editrss">RSS</label>
  -                            <p><input type="url" id="editrss" required class="form-control"/></p>
  -                            <security:csrfInput/>
  -                            <p><input type="submit" value="Apply" class="btn btn-default"/></p>
  -                        </div>
  -                    </form>
  ---%>
                   </div>
                   <div class="tab-pane fade" id="remove" role="tabpanel" aria-labelledby="remove-tab">
                       <h3>Remove subscriber</h3>
  -                    <form method="GET" id="remove_subscr_form" action="">
  +                    <form method="GET" id="remove_subscriber_form" action="">
                           <div class="input-group">
                               <label for="removeemail">Enter email of subscriber</label>
                               <input type="email" id="removeemail" required class="form-control"/>
  
positive.code:                             <p><input type="text" id="name" required class="form-control"/></p>
                              <label for="rss">RSS</label>
                              <p><input type="url" id="rss" required class="form-control"/></p>
                              <label for="starttime">Start date</label>
                              <p><input type="date" id="starttime" class="form-control"/></p>
                              <security:csrfInput/>
                              <input type="submit" value="Create" class="btn btn-default"/>
                          </div>
  
negative.code:             })
          }
      });
  
      function showAlert(type, text){
          if (type == 'error') {
              $('#alerts_panel').html('<div class="alert alert-danger alert-dismissible" role="alert">'
                  + '<button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>'
                  + '<strong>Error!</strong>'+ text + '</div>');
          } else if (type == 'warning') {
              $('#alerts_panel').html('<div class="alert alert-warning alert-dismissible" role="alert">'
                  + '<button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>'
                  + '<strong>Warning!</strong>' + text + '</div>');
          } else {
              $('#alerts_panel').html('<div class="alert alert-success alert-dismissible" role="alert">'
                  + '<button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>'
                  + '<strong>Success!</strong>' + text + '</div>');
          }
      }
  
  
      function isEmptyText(text) {
          if (text == null || text == '' || text == 'undefined') {
  