var url = location.href;
var rgexp = new RegExp(/^(http|https):\/\/[^\/]*\/([^\/]*).*$/);
url.match(rgexp);
switch (RegExp.$2) {
case 'topics.html':
    synchronizeNavigationImage ("GlobalNavigation1");
    break;
case 'senmon':
    synchronizeNavigationImage ("GlobalNavigation2");
    break;
case 'news.html':
    synchronizeNavigationImage ("GlobalNavigation3");
    break;
case 'iinkai':
    synchronizeNavigationImage ("GlobalNavigation4");
    break;
case 'hyouka':
    synchronizeNavigationImage ("GlobalNavigation5");
    break;
case 'iken-bosyu':
    synchronizeNavigationImage ("GlobalNavigation6");
    break;
case 'koukan':
case 'monitor':
    synchronizeNavigationImage ("GlobalNavigation7");
    break;
case 'yougoshu.html':
    synchronizeNavigationImage ("GlobalNavigation8");
    break;
case 'hourei':
    synchronizeNavigationImage ("GlobalNavigation9");
    break;
case 'link':
    synchronizeNavigationImage ("GlobalNavigation10");
    break;
default:
    break;
}