tracks/app/views/projects/destroy.js.erb

remove_deleted_project();
ProjectListPage.update_all_states_count(<%=@active_projects_count%>, <%=@hidden_projects_count%>, <%=@completed_projects_count%>)
TracksPages.page_notify('notice', "Deleted project '<%= @project.name%>'", 5);
TracksPages.set_page_badge(<%=@down_count%>);

/* TODO: refactor and move function to application.js */
function remove_deleted_project() {
  $('div#<%=dom_id(@project, "container")%>').slideUp(1000,
    function() {
      $('div#<%=dom_id(@project, "container")%>').remove();
    });
}