function nol(){
if (document.all.m_about) {m_about.style.display='none'}
if (document.all.m_timetable) {m_timetable.style.display='none'}
if (document.all.m_tariffs) {m_tariffs.style.display='none'}
if (document.all.m_book) {m_book.style.display='none'}
if (document.all.m_info) {m_info.style.display='none'}
return;
}

function me_about(){
if (document.all.m_about) {m_about.style.display=''}
if (document.all.m_timetable) {m_timetable.style.display='none'}
if (document.all.m_tariffs) {m_tariffs.style.display='none'}
if (document.all.m_book) {m_book.style.display='none'}
if (document.all.m_info) {m_info.style.display='none'}
return;
}

function me_timetable(){
if (document.all.m_about) {m_about.style.display='none'}
if (document.all.m_timetable) {m_timetable.style.display=''}
if (document.all.m_tariffs) {m_tariffs.style.display='none'}
if (document.all.m_book) {m_book.style.display='none'}
if (document.all.m_info) {m_info.style.display='none'}
return;
}

function me_tariffs(){
if (document.all.m_about) {m_about.style.display='none'}
if (document.all.m_timetable) {m_timetable.style.display='none'}
if (document.all.m_tariffs) {m_tariffs.style.display=''}
if (document.all.m_book) {m_book.style.display='none'}
if (document.all.m_info) {m_info.style.display='none'}
return;
}

function me_book(){
if (document.all.m_about) {m_about.style.display='none'}
if (document.all.m_timetable) {m_timetable.style.display='none'}
if (document.all.m_tariffs) {m_tariffs.style.display='none'}
if (document.all.m_book) {m_book.style.display=''}
if (document.all.m_info) {m_info.style.display='none'}
return;
}

function me_info(){
if (document.all.m_about) {m_about.style.display='none'}
if (document.all.m_timetable) {m_timetable.style.display='none'}
if (document.all.m_tariffs) {m_tariffs.style.display='none'}
if (document.all.m_book) {m_book.style.display='none'}
if (document.all.m_info) {m_info.style.display=''}
return;
}