var browser = navigator.appName.charAt( 0 );
var version = navigator.appVersion.charAt( 0 );
if( browser == "N"){
    document.write( '<font color="red">This Web Site Is Suitable for Internet Explorer v.4/5.　Japanese Only.　2000/6/16 restart.</font>');
}
if( browser == "M" && version <4 ){
    document.write('<font color="red">This Web Site Is  Suitable for Internet Explorer v.4/5.　Japanese Only.　2000/6/16 restart.</font>');
}
if( browser == "M" && version >=4 ){
    document.write('<font color="#004080"><i>Your Browser Is Suitable for This Web Site.　Japanese Only.　2000/6/16 restart.</i></font>')}