def filter_project_dropdown(target_id)
    options = [[t('hours.filter_project.all'),     0]]
    options += [['--------', 'divider']]
    options += current_user.projects.sort_by(&:name).collect { |p| [p.name, p.id] }
    select(:hours_project_filter, :assigned, options, :disabled => 'divider', :id => target_id)