diff --git a/select_url_field/choice_with_other.py b/select_url_field/choice_with_other.py
index ddd3589..590ca81 100644
--- a/select_url_field/choice_with_other.py
+++ b/select_url_field/choice_with_other.py
@@ -1,5 +1,6 @@
 from django import forms
 from django.conf import settings
+from django.utils.safestring import mark_safe
 
 
 OTHER_CHOICE = '__other__'
@@ -28,15 +29,16 @@ def decompress(self, value):
                 return [OTHER_CHOICE, value]
         return ['', '']
 
-    def format_output(self, rendered_widgets):
-        
+    def format_output(self, output):
         """Format the output by substituting the "other" choice into the first widget"""
-        
-        return u'<div class="choice_with_other_wrapper" style="display: table-row;">{} {}</div>'.format(
-            rendered_widgets[0],
-            rendered_widgets[1],
+        return '<div class="choice_with_other_wrapper" style="display: table-row;">{}</div>'.format(
+            output
         )
 
+    def render(self, name, value, attrs=None, renderer=None):
+        output = super(ChoiceWithOtherWidget, self).render(name, value, attrs=attrs, renderer=renderer)
+        return mark_safe(self.format_output(output))
+
     def _media(self):
         return forms.Media(js=('admin/choice_with_other.js',))
     media = property(_media)
diff --git a/select_url_field/fields.py b/select_url_field/fields.py
index 9abaee9..9d8eedf 100644
--- a/select_url_field/fields.py
+++ b/select_url_field/fields.py
@@ -6,8 +6,12 @@
 from django.core.validators import URLValidator
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
-from django.utils.encoding import smart_unicode
+try:
+    from django.utils.encoding import smart_unicode
+except ImportError:
+    from django.utils.encoding import smart_str as smart_unicode
 from select_url_field import select_url_field_settings
+import collections
 
 try:
     from importlib import import_module
@@ -44,7 +48,7 @@ def formfield(self, **kwargs):
         # When choices given, use them
         # When not, use global settings
         if self._has_choices:
-            if callable(self._url_choices):
+            if isinstance(self._url_choices, collections.Callable):
                 choices = self._url_choices()
             else:
                 choices = self._url_choices
@@ -83,7 +87,7 @@ def __call__(self, value):
         try:
             # OK if it's a valid url
             self.url_validator(value)
-        except ValidationError, e:
+        except ValidationError as e:
             # Not a valid url, see it's a path
             if not self.regex.search(smart_unicode(value)):
                 raise e
@@ -91,7 +95,7 @@ def __call__(self, value):
 
 class SelectURLFormField(forms.CharField):
     default_error_messages = {
-        'invalid': _(u'Enter a valid URL.'),
+        'invalid': _('Enter a valid URL.'),
     }
 
     def __init__(self, max_length=None, min_length=None, *args, **kwargs):
diff --git a/select_url_field/static/admin/choice_with_other.js b/select_url_field/static/admin/choice_with_other.js
index a2bb6c4..4d06525 100644
--- a/select_url_field/static/admin/choice_with_other.js
+++ b/select_url_field/static/admin/choice_with_other.js
@@ -1,31 +1,35 @@
 (function($) {
     var OTHER_CHOICE = '__other__'; //See
     $(function(){
-        var wrappers = $('.choice_with_other_wrapper');
-        wrappers.each(function(){
-            var select = $('select', this);
-            var text_input = $('input', this);
-            select.change(function(){
-                if(select.val() == OTHER_CHOICE){
-                    ;
-                }else{
-                    text_input.val(select.val());
+        $('body').delegate('.choice_with_other_wrapper select', 'change', function(e){
+            var select = $(this)
+            var text_input = $(this).parent().find('input')
+            if(select.val() == OTHER_CHOICE){
+                ;
+            }else{
+                text_input.val(select.val());
+            }
+        });
+        var text_input = $('input', this);
+        $('body').delegate('.choice_with_other_wrapper input', 'keyup', function(e){
+            var match = false;
+            var text_input = $(this)
+            var select = $(this).parent().find('select')
+            $(select).find('option').each(function(){
+                if($(this).attr('value') == text_input.val()){
+                    match = true;
                 }
-            });
-            text_input.keyup(function(){
-                var match = false;
-                $(select).find('option').each(function(){
-                    if($(this).attr('value') == text_input.val()){
-                        match = true;
-                    }
-                })
-                if(!match){
-                    select.val(OTHER_CHOICE);
-                }else{
-                    select.val(text_input.val());
-                }
-            });
-            select.change();
+            })
+            if(!match){
+                select.val(OTHER_CHOICE);
+            }else{
+                select.val(text_input.val());
+            }
+        })
+
+        $('.choice_with_other_wrapper').each(function(){
+            $('select', this).change();
         })
+
     })
-})(django.jQuery);
+})(django.jQuery);
\ No newline at end of file