<tal:block 
  xmlns:i18n="http://xml.zope.org/namespaces/i18n"
  i18n:domain="silva_document">
<a href="edit_mode" title="nest element" tal:attributes="href string:${url_start}/edit_mode" i18n:attributes="title"><img tal:attributes="src string:${silva_root}/globals/nest_element.gif" width="16" height="16" border="0" alt="edit element" i18n:attributes="alt" /></a>
</tal:block>
