#tinymce_managefiles_manageform.hasunusedfiles .managefilesstatus {display:none;}
#tinymce_managefiles_manageform.hasmissingfiles .managefilesstatus {display:inline;}

#tinymce_managefiles_manageform #id_deletefiles {display:none;}
#tinymce_managefiles_manageform.hasunusedfiles #id_deletefiles {display:block;}
#tinymce_managefiles_manageform #id_deletefiles .felement.fcheckbox {display:none;}
#tinymce_managefiles_manageform #id_deletefiles .felement.fcheckbox.isunused {display:block;}