<%= object.first? ? image_tag('icons/stop.png', :size => '16x16') : link_to(image_tag('icons/arrow_up.png', :size => '16x16', :alt => t('page.asc')), {:action => 'update', :move => 'higher', :id => object.id}, :method => :put) -%> <%= object.last? ? image_tag('icons/stop.png', :size => '16x16') : link_to(image_tag('icons/arrow_down.png', :size => '16x16', :alt => t('page.desc')), {:action => 'update', :move => 'lower', :id => object.id}, :method => :put) -%>