/**
  * resolve the url for td before and after divider image
  * @return string
  */
 protected function resolveDummyDividerImageUrl()
 {
     return PlaceholderImageUtil::resolveTransparentImageUrl(true);
 }
 protected function resolveTdCloseAndOpenContentForHorizontalLayout()
 {
     if ($this->getLayout() == 'horizontal') {
         $urlToImage = PlaceholderImageUtil::resolveTransparentImageUrl(true);
         $content = ZurmoHtml::closeTag('td');
         $content .= ZurmoHtml::openTag('td', array('class' => 'social-horizontal-expander'));
         $content .= ZurmoHtml::image($urlToImage, '', array('width' => '15', 'height' => '15'));
         $content .= ZurmoHtml::closeTag('td');
         $content .= ZurmoHtml::openTag('td');
         return $content;
     }
 }