diff --git a/edbob/pyramid/forms/formalchemy/grid.py b/edbob/pyramid/forms/formalchemy/grid.py
index 4e5fa3f..b217bc3 100644
--- a/edbob/pyramid/forms/formalchemy/grid.py
+++ b/edbob/pyramid/forms/formalchemy/grid.py
@@ -32,6 +32,7 @@ from webhelpers.html.tags import literal
 
 import formalchemy
 
+import edbob
 from edbob.util import prettify
 
 
@@ -75,6 +76,11 @@ class AlchemyGrid(formalchemy.Grid):
         self.clickable = config.get('clickable', False)
         self.deletable = config.get('deletable', False)
         self.pager = instances if isinstance(instances, paginate.Page) else None
+        self.extra_columns = []
+
+    def add_column(self, name, label, callback):
+        self.extra_columns.append(
+            edbob.Object(name=name, label=label, callback=callback))
 
     def field_name(self, field):
         return field.name
diff --git a/edbob/pyramid/static/css/index.css b/edbob/pyramid/static/css/index.css
index 45ca9df..8760c0e 100644
--- a/edbob/pyramid/static/css/index.css
+++ b/edbob/pyramid/static/css/index.css
@@ -12,12 +12,11 @@
 
 div.object-index {
     font-size: 10pt;
-    margin: auto;
 }
 
-div.object-index div.wrapper {
-    overflow: auto;
-    padding-bottom: 10px;
+div.object-index table.header {
+    padding-bottom: 5px;
+    width: 100%;
 }
 
 
@@ -25,8 +24,11 @@ div.object-index div.wrapper {
  * Context Menu
  ******************************/
 
-div.object-index #context-menu {
-    float: right;
+div.object-index table.header td.context-menu {
+    vertical-align: top;
+}
+
+div.object-index table.header td.context-menu ul {
     list-style-type: none;
     text-align: right;
 }
@@ -50,6 +52,16 @@ div.object-index div.filterset div.buttons * {
 }
 
 
+/******************************
+ * Tools
+ ******************************/
+
+div.object-index table.header td.tools {
+    text-align: right;
+    vertical-align: bottom;
+}
+
+
 /******************************
  * Grids
  ******************************/
diff --git a/edbob/pyramid/templates/edbob/index.mako b/edbob/pyramid/templates/edbob/index.mako
index fea438a..44d1af7 100644
--- a/edbob/pyramid/templates/edbob/index.mako
+++ b/edbob/pyramid/templates/edbob/index.mako
@@ -6,18 +6,27 @@
 </%def>
 
 <%def name="context_menu_items()"></%def>
+<%def name="tools()"></%def>
 
 <div class="object-index">
-  <div class="wrapper">
 
-    <ul id="context-menu">
-      ${self.context_menu_items()}
-    </ul>
-
-    <div class="left">
-      ${search.render()|n}
-    </div>
-  </div>
+  <table class="header">
+    <tr>
+      <td rowspan="2" class="filters">
+	${search.render()|n}
+      </td>
+      <td class="context-menu">
+	<ul>
+	  ${self.context_menu_items()}
+	</ul>
+      </td>
+    </tr>
+    <tr>
+      <td class="tools">
+	${self.tools()}
+      </td>
+    </tr>
+  </table>
 
   ${grid|n}
 
diff --git a/edbob/pyramid/templates/forms/grid_readonly.mako b/edbob/pyramid/templates/forms/grid_readonly.mako
index 275c5a8..72920ca 100644
--- a/edbob/pyramid/templates/forms/grid_readonly.mako
+++ b/edbob/pyramid/templates/forms/grid_readonly.mako
@@ -3,50 +3,52 @@
   <table>
     <thead>
       <tr>
-	% if checkboxes:
-	    <th class="checkbox">${h.checkbox('check-all')}</th>
-	% endif
+        % if checkboxes:
+            <th class="checkbox">${h.checkbox('check-all')}</th>
+        % endif
         % for field in grid.iter_fields():
-	    ${grid.th_sortable(field)|n}
-	% endfor
-	% for i in range(len(grid.config['actions'])):
-	    <th>&nbsp;</th>
-	% endfor
-	% if grid.deletable:
-	    <th>&nbsp;</th>
-	% endif
+            ${grid.th_sortable(field)|n}
+        % endfor
+        % for col in grid.extra_columns:
+            <th>${col.label}</td>
+        % endfor
+        % if grid.deletable:
+            <th>&nbsp;</th>
+        % endif
       </tr>
     </thead>
 
     <tbody>
       % for i, row in enumerate(grid.rows):
-	  <% grid._set_active(row) %>
+          <% grid._set_active(row) %>
           <tr ${grid.row_attrs(i)|n}>
-	    % if checkboxes:
-		<td class="checkbox">${h.checkbox('check-'+grid.model.uuid, disabled=True)}</td>
-	    % endif
+            % if checkboxes:
+                <td class="checkbox">${h.checkbox('check-'+grid.model.uuid, disabled=True)}</td>
+            % endif
             % for field in grid.iter_fields():
-	        <td class="${grid.field_name(field)}">${grid.render_field(field, True)|n}</td>
-	    % endfor
-	    ${grid.get_actions()}
-	    % if grid.deletable:
-	        <td class="delete">&nbsp;</td>
-	    % endif
-	  </tr>
+                <td class="${grid.field_name(field)}">${grid.render_field(field, True)|n}</td>
+            % endfor
+            % for col in grid.extra_columns:
+                <td class="${col.name}">${col.callback(row)|n}</td>
+            % endfor
+            % if grid.deletable:
+                <td class="delete">&nbsp;</td>
+            % endif
+          </tr>
       % endfor
     </tbody>
   </table>
   % if hasattr(grid, 'pager') and grid.pager:
       <div class="pager">
-	<p class="showing">
-	  showing
-	  ${grid.pager.first_item} thru ${grid.pager.last_item} of ${grid.pager.item_count}
-	</p>
-	<p class="page-links">
-	  ${h.select('grid-page-count', grid.pager.items_per_page, (5, 10, 20, 50, 100))}
-	  per page:&nbsp;
-	  ${grid.pager.pager('~3~', onclick='return grid_navigate_page($(this));')}
-	</p>
+        <p class="showing">
+          showing
+          ${grid.pager.first_item} thru ${grid.pager.last_item} of ${grid.pager.item_count}
+        </p>
+        <p class="page-links">
+          ${h.select('grid-page-count', grid.pager.items_per_page, (5, 10, 20, 50, 100))}
+          per page:&nbsp;
+          ${grid.pager.pager('~3~', onclick='return grid_navigate_page($(this));')}
+        </p>
       </div>
   % endif
 </div>