Redmine

        show_label = args[0] || l(:button_show)

        hide_label = args[1] || args[0] || l(:button_hide)

        js = "$('##{html_id}-show, ##{html_id}-hide').toggle(); $('##{html_id}').fadeToggle(150);"

        out << link_to_function(show_label, js, :id => "#{html_id}-show", :class => 'collapsible collapsed')

        out << link_to_function(hide_label, js, :id => "#{html_id}-hide", :class => 'collapsible', :style => 'display:none;')

        out << content_tag('div', textilizable(text, :object => obj, :headings => false), :id => html_id, :class => 'collapsed-text', :style => 'display:none;')