function chPage(intPage) {
  var arrPage = new Array("topic.html","career.html","cert.html","XOOPS/","http://blogs.yahoo.co.jp/prof_wrightnet","http://wright-net.in/shou/game/pika_game.shtml");

  location.href=arrPage[intPage];
}

function mailto() {
  if( document.frmMain.txtName.value == "" || document.frmMain.txtMail.value == "" ||document.frmMain.txtComment.value == "" ) {
    alert("お名前､メールアドレス､ご質問内容を入力してください");
    return false;
  } else {

    document.frmMain.action="mailto:info@wright-net.in?subject=お問い合わせ";
    document.frmMain.submit();
    return true;  }

}