$("#sort_headers").html("<%= j render 'sort_headers' %>");
$("#tbody_mail_crons").html("<%= j render :partial => 'mail_cron', :collection => @mail_crons %>");
$("#mail_cron_pagination").html("<%= j paginate @mail_crons, :params => {:direction => params[:direction], :sort => params[:sort], :filter => @filter, :new_filter => nil} %>");