Event.observe(window, 'load', function(evt) {
  Event.observe($('area1'), 'mouseover', function(evt) {
    hokkaido_view();
  });
  Event.observe($('area2'), 'mouseover', function(evt) {
    tohoku_view();
  });
  Event.observe($('area3'), 'mouseover', function(evt) {
    kanto_view();
  });
  Event.observe($('area4'), 'mouseover', function(evt) {
    tokyo_view();
  });
  Event.observe($('area5'), 'mouseover', function(evt) {
    chubu_view();
  });
  Event.observe($('area6'), 'mouseover', function(evt) {
    kinki_view();
  });
  Event.observe($('area7'), 'mouseover', function(evt) {
    chugoku_view();
  });
  Event.observe($('area8'), 'mouseover', function(evt) {
    shikoku_view();
  });
  Event.observe($('area9'), 'mouseover', function(evt) {
    kyusyu_view();
  });
  Event.observe($('area10'), 'mouseover', function(evt) {
    okinawa_view();
  });
});
function hokkaido_view() {
  MM_swapImage('img_hokkaido','','/img/clinic/map/b_hokkaido.gif',1);
  $('map_baloon').style.visibility = 'visible';
  $('area_name').innerHTML = '北海道';
}
function tohoku_view() {
  MM_swapImage('img_tohoku','','/img/clinic/map/b_tohoku.gif',1);
  $('map_baloon').style.visibility = 'visible';
  $('area_name').innerHTML = '東北';
}
function kanto_view() {
  MM_swapImage('img_tokyo','','/img/clinic/map/b_kanto_e.gif','img_chubu','','/img/clinic/map/b_kanto_w.gif',1);
  $('map_baloon').style.visibility = 'visible';
  $('area_name').innerHTML = '関東';
}
function tokyo_view() {
  MM_swapImage('img_tokyo','','/img/clinic/map/b_tokyo_e.gif','img_chubu','','/img/clinic/map/b_tokyo_w.gif',1);
  $('map_baloon').style.visibility = 'visible';
  $('area_name').innerHTML = '首都圏';
}
function chubu_view() {
  MM_swapImage('img_chubu','','/img/clinic/map/b_chubu_e.gif','img_kinki','','/img/clinic/map/b_chubu_w.gif',1);
  $('map_baloon').style.visibility = 'visible';
  $('area_name').innerHTML = '中部';
}
function kinki_view() {
  MM_swapImage('img_kinki','','/img/clinic/map/b_kinki_e.gif','img_chugoku','','/img/clinic/map/b_kinki_w.gif',1);
  $('map_baloon').style.visibility = 'visible';
  $('area_name').innerHTML = '近畿';
}
function chugoku_view() {
  MM_swapImage('img_chugoku','','/img/clinic/map/b_chugoku.gif',1);
  $('map_baloon').style.visibility = 'visible';
  $('area_name').innerHTML = '中国';
}
function shikoku_view() {
  MM_swapImage('img_shikoku','','/img/clinic/map/b_shikoku.gif',1);
  $('map_baloon').style.visibility = 'visible';
  $('area_name').innerHTML = '四国';
}
function kyusyu_view() {
  MM_swapImage('img_kyusyu','','/img/clinic/map/b_kyusyu.gif',1);
  $('map_baloon').style.visibility = 'visible';
  $('area_name').innerHTML = '九州';
}
function okinawa_view() {
  MM_swapImage('img_okinawa','','/img/clinic/map/b_okinawa.gif',1);
  $('map_baloon').style.visibility = 'visible';
  $('area_name').innerHTML = '沖縄';
}
function baloon_hidden() {
  MM_swapImgRestore();
  $('map_baloon').style.visibility = 'hidden';
}