diff --git a/src/mibew/js/source/bans.js b/src/mibew/js/source/bans.js
index 4bc3e869..bbce8b3c 100644
--- a/src/mibew/js/source/bans.js
+++ b/src/mibew/js/source/bans.js
@@ -19,10 +19,19 @@
 (function(Mibew, $) {
     $(document).ready(function() {
         $('a.remove-link').click(function() {
-            return confirm(Mibew.Localization.trans(
-                'Are you sure that you want to delete address {0} from the blocked list?',
-                $(this).data('ban-address')
-            ));
+            var url = $(this).attr('href'),
+                message = Mibew.Localization.trans(
+                    'Are you sure that you want to delete address {0} from the blocked list?',
+                    $(this).data('ban-address')
+                );
+
+            Mibew.Utils.confirm(message, function(value) {
+                if (value) {
+                    window.location.href = url;
+                }
+            });
+
+            return false;
         });
     });
 })(Mibew, jQuery);
diff --git a/src/mibew/js/source/chat/model_views/controls/close.js b/src/mibew/js/source/chat/model_views/controls/close.js
index 988d0db7..abd419dc 100644
--- a/src/mibew/js/source/chat/model_views/controls/close.js
+++ b/src/mibew/js/source/chat/model_views/controls/close.js
@@ -49,13 +49,15 @@
              */
             closeThread: function() {
                 // Show confirmation message if can
-                var confirmMessage = Mibew.Localization.trans('Are you sure want to leave chat?');
+                var confirmMessage = Mibew.Localization.trans('Are you sure want to leave chat?'),
+                    context = this;
                 if (confirmMessage !== false) {
-                    if (! confirm(confirmMessage)) {
-                        return;
-                    }
+                    Mibew.Utils.confirm(confirmMessage, function(value) {
+                        if (value) {
+                            context.model.closeThread();
+                        }
+                    });
                 }
-                this.model.closeThread();
             }
         }
     );
diff --git a/src/mibew/js/source/default/utils.js b/src/mibew/js/source/default/utils.js
index c9705692..2a0932e4 100644
--- a/src/mibew/js/source/default/utils.js
+++ b/src/mibew/js/source/default/utils.js
@@ -123,4 +123,36 @@
         ].join(',');
     }
 
+    /**
+     * Alerts a message.
+     * @param {String} message A message that should be displayed.
+     */
+    Mibew.Utils.alert = function(message) {
+        alert(message);
+    }
+
+    /**
+     * Requires user confirmation.
+     * @param {String} message An assertion that should be confirmed.
+     * @param {Function} callback A function that will be called when the
+     * dialog is closed. This function accepts only one argument which is
+     * boolean that represents confirmation result.
+     */
+    Mibew.Utils.confirm = function(message, callback) {
+        var result = confirm(message);
+        callback(result);
+    }
+
+    /**
+     * Requests some info from the user.
+     * @param {String} message A message that will be displayed to user.
+     * @param {Function} callback A function that will be called when the
+     * dialog is closed. This function accepts only one argument which is
+     * the entered result.
+     */
+    Mibew.Utils.prompt = function(message, callback) {
+        var result = prompt(message);
+        callback(result);
+    }
+
 })(Mibew, jQuery, _);
\ No newline at end of file
diff --git a/src/mibew/js/source/groups.js b/src/mibew/js/source/groups.js
index e4a6a0ea..7ea7e33d 100644
--- a/src/mibew/js/source/groups.js
+++ b/src/mibew/js/source/groups.js
@@ -18,11 +18,20 @@
 
 (function(Mibew, $) {
     $(document).ready(function(){
-        $('a.remove-link').click(function(){
-            return confirm(Mibew.Localization.trans(
-                'Are you sure that you want to delete the group "{0}"?',
-                $(this).data('group-name')
-            ));
+        $('a.remove-link').click(function() {
+            var url = $(this).attr('href'),
+                message = Mibew.Localization.trans(
+                    'Are you sure that you want to delete the group "{0}"?',
+                    $(this).data('group-name')
+                );
+
+            Mibew.Utils.confirm(message, function(value) {
+                if (value) {
+                    window.location.href = url;
+                }
+            });
+
+            return false;
         });
     });
 })(Mibew, jQuery);
diff --git a/src/mibew/js/source/operators.js b/src/mibew/js/source/operators.js
index b25c4e6f..06889653 100644
--- a/src/mibew/js/source/operators.js
+++ b/src/mibew/js/source/operators.js
@@ -19,10 +19,19 @@
 (function(Mibew, $) {
     $(document).ready(function(){
         $('a.remove-link').click(function(){
-            return confirm(Mibew.Localization.trans(
-                'Are you sure that you want to delete operator "{0}"?',
-                $(this).data('operator-login')
-            ));
+            var url = $(this).attr('href'),
+                message = Mibew.Localization.trans(
+                    'Are you sure that you want to delete operator "{0}"?',
+                    $(this).data('operator-login')
+                );
+
+            Mibew.Utils.confirm(message, function(value) {
+                if (value) {
+                    window.location.href = url;
+                }
+            });
+
+            return false;
         });
     });
 })(Mibew, jQuery);
diff --git a/src/mibew/js/source/plugins.js b/src/mibew/js/source/plugins.js
index f38bb542..6bc0b7d5 100644
--- a/src/mibew/js/source/plugins.js
+++ b/src/mibew/js/source/plugins.js
@@ -19,10 +19,19 @@
 (function(Mibew, $) {
     $(document).ready(function(){
         $('a.uninstall-link').click(function(){
-            return confirm(Mibew.Localization.trans(
-                'Are you sure that you want to uninstall plugin "{0}"?',
-                $(this).data('plugin-name')
-            ));
+            var url = $(this).attr('href'),
+                message = Mibew.Localization.trans(
+                    'Are you sure that you want to uninstall plugin "{0}"?',
+                    $(this).data('plugin-name')
+                );
+
+            Mibew.Utils.confirm(message, function(value) {
+                if (value) {
+                    window.location.href = url;
+                }
+            });
+
+            return false;
         });
     });
 })(Mibew, jQuery);
diff --git a/src/mibew/js/source/users/app.js b/src/mibew/js/source/users/app.js
index ed64ae19..36b49045 100644
--- a/src/mibew/js/source/users/app.js
+++ b/src/mibew/js/source/users/app.js
@@ -33,7 +33,7 @@
         badRequestsCount++;
         // Check if there is
         if (badRequestsCount == 10) {
-            alert(Mibew.Localization.trans('Network problems detected. Please refresh the page.'));
+            Mibew.Utils.alert(Mibew.Localization.trans('Network problems detected. Please refresh the page.'));
             badRequestsCount = 0;
         }
     }
diff --git a/src/mibew/js/source/users/collection_views/threads_collection.js b/src/mibew/js/source/users/collection_views/threads_collection.js
index dd406c7c..279ac268 100644
--- a/src/mibew/js/source/users/collection_views/threads_collection.js
+++ b/src/mibew/js/source/users/collection_views/threads_collection.js
@@ -190,7 +190,7 @@
                 // Show popup notification if need
                 if (Mibew.Objects.Models.page.get('showPopup')) {
                     this.once('render', function() {
-                        alert(
+                        Mibew.Utils.alert(
                             Mibew.Localization.trans('A new visitor is waiting for an answer.')
                         );
                     })
diff --git a/src/mibew/js/source/users/model_views/queued_thread.js b/src/mibew/js/source/users/model_views/queued_thread.js
index 6f0bfd1a..0d8a78b1 100644
--- a/src/mibew/js/source/users/model_views/queued_thread.js
+++ b/src/mibew/js/source/users/model_views/queued_thread.js
@@ -242,7 +242,7 @@
             showFirstMessage: function() {
                 var message = this.model.get('firstMessage');
                 if (message) {
-                    alert(message);
+                    Mibew.Utils.alert(message);
                 }
             }