diff --git a/CHANGES b/CHANGES
index b517019..f1269fe 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,8 @@
+Release 0.4
+-----------
+* add css_class attribute
+
+
 Release 0.3
 -----------
 * add ability to order buttons
@@ -5,7 +10,6 @@ Release 0.3
 
 Release 0.2
 -----------
-
 * python 3.3, 3.4 compatibility
 * add ability to customize the upload template
 * disable button after click to prevent double click
@@ -15,5 +19,4 @@ Release 0.2
 
 Release 0.1
 -----------
-
 * Initial release
diff --git a/README.rst b/README.rst
index 5c98af3..60246e9 100644
--- a/README.rst
+++ b/README.rst
@@ -36,6 +36,14 @@ Example::
     - with `@action()` browser will be redirected to `change view `
 
 
+More options::
+
+
+        @link(label='Update', icon="icon-refresh icon-white", permission='model_change", order=-1)
+        def update_all(self, request):
+            ....
+
+
 *Note*
 
     The package contains a ``UploadMixin`` to manage custom file uploads
diff --git a/admin_extra_urls/__init__.py b/admin_extra_urls/__init__.py
index 2f26b5b..f0cf8a5 100644
--- a/admin_extra_urls/__init__.py
+++ b/admin_extra_urls/__init__.py
@@ -3,7 +3,7 @@
 import os
 
 NAME = 'admin-extra-urls'
-VERSION = __version__ = (0, 3, 0, 'final', 0)
+VERSION = __version__ = (0, 4, 0, 'final', 0)
 __author__ = 'sax'
 
 
diff --git a/admin_extra_urls/extras.py b/admin_extra_urls/extras.py
index cdbd731..e989def 100644
--- a/admin_extra_urls/extras.py
+++ b/admin_extra_urls/extras.py
@@ -12,7 +12,7 @@ def labelize(label):
     return label.replace('_', ' ').strip().title()
 
 
-def link(path=None, label=None, icon='', permission=None, order=999):
+def link(path=None, label=None, icon='', permission=None, css_class="btn btn-success", order=999):
     """
     decorator to mark ModelAdmin method as 'url' links.
 
@@ -26,7 +26,7 @@ def link(path=None, label=None, icon='', permission=None, order=999):
 
     """
 
-    def action_decorator(func):
+    def link_decorator(func):
         def _inner(self, *args, **kwargs):
             ret = func(self, *args, **kwargs)
             if not isinstance(ret, HttpResponse):
@@ -38,14 +38,15 @@ def _inner(self, *args, **kwargs):
                        label or labelize(func.__name__),
                        icon,
                        permission,
-                       order)
+                       order,
+                       css_class)
 
         return _inner
 
-    return action_decorator
+    return link_decorator
 
 
-def action(path=None, label=None, icon='', permission=None, order=999):
+def action(path=None, label=None, icon='', permission=None, css_class="btn btn-success", order=999):
     """
     decorator to mark ModelAdmin method as 'url' action.
 
@@ -72,7 +73,8 @@ def _inner(self, request, pk):
                          label or labelize(func.__name__),
                          icon,
                          permission,
-                         order)
+                         order,
+                         css_class)
 
         return _inner
 
@@ -116,16 +118,16 @@ def wrapper(*args, **kwargs):
         extras = []
 
         for __, entry in extra_urls.items():
-            isdetail, method_name, (path, label, icon, perm_name, order) = entry
+            isdetail, method_name, (path, label, icon, perm_name, order, css_class) = entry
             info[2] = method_name
             if isdetail:
                 self.extra_detail_buttons.append([method_name, label,
-                                                  icon, perm_name, order])
+                                                  icon, perm_name, css_class, order])
                 uri = r'^%s/(?P<pk>.*)/$' % path
             else:
                 uri = r'^%s/$' % path
                 self.extra_buttons.append([method_name, label,
-                                           icon, perm_name, order])
+                                           icon, perm_name, css_class, order])
 
             extras.append(url(uri,
                               wrap(getattr(self, method_name)),
diff --git a/admin_extra_urls/templates/admin_extra_urls/change_form.html b/admin_extra_urls/templates/admin_extra_urls/change_form.html
index 9ea0204..8e2d7ac 100644
--- a/admin_extra_urls/templates/admin_extra_urls/change_form.html
+++ b/admin_extra_urls/templates/admin_extra_urls/change_form.html
@@ -4,13 +4,13 @@
     <div class="object-tools">
         {% block object-tools-items %}
             {{block.super}}
-            {% for method_name, label, icon, perm in adminform.model_admin.extra_detail_buttons %}
+            {% for method_name, label, icon, perm, css_class in adminform.model_admin.extra_detail_buttons %}
                 {% has_permission perm as authorized %}
                 {% if authorized %}
                     {%nlless%}
-                    <a href="{% url opts|admin_urlname:method_name original.pk %}{% if is_popup %}?_popup=1{% endif %}"
-                       class="btn btn-success">
-                        {% if icon %}<i class="{{ icon }} icon-white"></i>&nbsp;{% endif %}
+                    <a id="btn-{{method_name}}" href="{% url opts|admin_urlname:method_name original.pk %}{% if is_popup %}?_popup=1{% endif %}"
+                       class="extra-link {{css_class}} {{method_name}}">
+                        {% if icon %}<i class="{{ icon }}"></i>&nbsp;{% endif %}
                         {{ label }}</a>
                     {% endnlless %}
                 {% endif %}
diff --git a/admin_extra_urls/templates/admin_extra_urls/change_list.html b/admin_extra_urls/templates/admin_extra_urls/change_list.html
index e8430b7..a93394c 100644
--- a/admin_extra_urls/templates/admin_extra_urls/change_list.html
+++ b/admin_extra_urls/templates/admin_extra_urls/change_list.html
@@ -11,12 +11,12 @@
                 </a>
             {% endif %}
 
-            {% for method_name, label, icon, perm in cl.model_admin.extra_buttons %}
+            {% for method_name, label, icon, perm, css_class in cl.model_admin.extra_buttons %}
                 {% has_permission perm as authorized %}
                 {% if authorized %}
         {% spaceless %}
-                    <a href="{% url cl.opts|admin_urlname:method_name %}{% if is_popup %}?_popup=1{% endif %}"
-                       class="btn btn-success">{% if icon %}<i class="{{ icon }} icon-white"></i>&nbsp;{% endif %}{{ label }}
+                    <a id="btn-{{method_name}}" href="{% url cl.opts|admin_urlname:method_name %}{% if is_popup %}?_popup=1{% endif %}"
+                       class="extra-link {{css_class}} {{method_name}}">{% if icon %}<i class="{{ icon }} icon-white"></i>&nbsp;{% endif %}{{ label }}
                     </a>
         {% endspaceless %}
                 {% endif %}