if (document.images)
 { 
// Japanese
var img1off = new Image();img1off.src ="/eng/img/navi_japanese.gif"; var img1on = new Image();img1on.src ="/eng/img/navi_japanese_on.gif"; 
// Home
var img2off = new Image();img2off.src ="/eng/img/navi_home.gif"; var img2on = new Image();img2on.src ="/eng/img/navi_home_on.gif"; 
// High school students
var img3off = new Image();img3off.src ="/eng/img/navi_study.gif"; var img3on = new Image();img3on.src ="/eng/img/navi_study_on.gif"; 
// Enterprises
var img4off = new Image();img4off.src ="/eng/img/navi_business.gif"; var img4on = new Image();img4on.src ="/eng/img/navi_business_on.gif"; 
// Student and Teaching staff
var img5off = new Image();img5off.src ="/eng/img/navi_student.gif"; var img5on = new Image();img5on.src ="/eng/img/navi_student_on.gif"; 
// Graduates
var img6off = new Image();img6off.src ="/eng/img/navi_graduate.gif"; var img6on = new Image();img6on.src ="/eng/img/navi_graduate_on.gif"; 
// Researchers
var img7off = new Image();img7off.src ="/eng/img/navi_scholar.gif"; var img7on = new Image();img7on.src ="/eng/img/navi_scholar_on.gif"; 

// News
var img8off = new Image();img8off.src ="/eng/img/navi_news.gif"; var img8on = new Image();img8on.src ="/eng/img/navi_news_on.gif"; 

// Introduction 
var img9off = new Image();img9off.src ="/eng/img/navi_intro.gif"; var img9on = new Image();img9on.src ="/eng/img/navi_intro_on.gif"; 
// 情報科学研究科長挨拶へ
var img901off = new Image();img901off.src ="/eng/img/navi_message.gif"; var img901on = new Image();img901on.src ="/eng/img/navi_message_on.gif"; 
// 教育理念と目標・計画へ
var img902off = new Image();img902off.src ="/eng/img/navi_ideal.gif"; var img902on = new Image();img902on.src ="/eng/img/navi_ideal_on.gif"; 
// 歴史・沿革へ
var img903off = new Image();img903off.src ="/eng/img/navi_history.gif"; var img903on = new Image();img903on.src ="/eng/img/navi_history_on.gif"; 
// 情報科学研究科の組織へ
var img904off = new Image();img904off.src ="/eng/img/navi_organization.gif"; var img904on = new Image();img904on.src ="/eng/img/navi_organization_on.gif"; 
// 研究科棟の案内へ
var img905off = new Image();img905off.src ="/eng/img/navi_arrange.gif"; var img905on = new Image();img905on.src ="/eng/img/navi_arrange_on.gif"; 
// キャンパス環境へ
var img906off = new Image();img906off.src ="/eng/img/navi_campus.gif"; var img906on = new Image();img906on.src ="/eng/img/navi_campus_on.gif"; 
// 関連資料へ
var img907off = new Image();img907off.src ="/eng/img/navi_data.gif"; var img907on = new Image();img907on.src ="/eng/img/navi_data_on.gif"; 

// 専攻・講座紹介へ
var img10off = new Image();img10off.src ="/eng/img/navi_specialty.gif"; var img10on = new Image();img10on.src ="/eng/img/navi_specialty_on.gif"; 
// 複合情報学専攻へ
var img1001off = new Image();img1001off.src ="/eng/img/navi_sis.gif"; var img1001on = new Image();img1001on.src ="/eng/img/navi_sis_on.gif"; 
// コンピュータサイエンス専攻へ
var img1002off = new Image();img1002off.src ="/eng/img/navi_cs.gif"; var img1002on = new Image();img1002on.src ="/eng/img/navi_cs_on.gif"; 
// 情報エレクトロニクス専攻へ
var img1003off = new Image();img1003off.src ="/eng/img/navi_ei.gif"; var img1003on = new Image();img1003on.src ="/eng/img/navi_ei_on.gif"; 
// 生命人間情報科学専攻へ
var img1004off = new Image();img1004off.src ="/eng/img/navi_bb.gif"; var img1004on = new Image();img1004on.src ="/eng/img/navi_bb_on.gif"; 
// メディアネットワーク専攻へ
var img1005off = new Image();img1005off.src ="/eng/img/navi_mnt.gif"; var img1005on = new Image();img1005on.src ="/eng/img/navi_mnt_on.gif"; 
// システム情報科学専攻へ
var img1006off = new Image();img1006off.src ="/eng/img/navi_ssi.gif"; var img1006on = new Image();img1006on.src ="/eng/img/navi_ssi_on.gif"; 

// 教員紹介へ
var img11off = new Image();img11off.src ="/eng/img/navi_staff.gif"; var img11on = new Image();img11on.src ="/eng/img/navi_staff_on.gif"; 

// 教育へ
var img12off = new Image();img12off.src ="/eng/img/navi_education.gif"; var img12on = new Image();img12on.src ="/eng/img/navi_education_on.gif"; 
// 入試情報へ
var img121off = new Image();img121off.src ="/eng/img/navi_nyu.gif"; var img121on = new Image();img121on.src ="/eng/img/navi_nyu_on.gif"; 
// 入試から修了までへ
var img122off = new Image();img122off.src ="/eng/img/navi_made.gif"; var img122on = new Image();img122on.src ="/eng/img/navi_made_on.gif"; 

// 研究へ
var img13off = new Image();img13off.src ="/eng/img/navi_research.gif"; var img13on = new Image();img13on.src ="/eng/img/navi_research_on.gif"; 
// 研究業績へ
var img131off = new Image();img131off.src ="/eng/img/navi_jiseki.gif"; var img131on = new Image();img131on.src ="/eng/img/navi_jiseki_on.gif"; 
// 寄付講座へ
var img132off = new Image();img132off.src ="/eng/img/navi_kifu.gif"; var img132on = new Image();img132on.src ="/eng/img/navi_kifu_on.gif"; 
// 共同研究へ
var img133off = new Image();img133off.src ="/eng/img/navi_kyodo.gif"; var img133on = new Image();img133on.src ="/eng/img/navi_kyodo_on.gif"; 
// 論文リストへ
var img134off = new Image();img134off.src ="/eng/img/navi_thesis.gif"; var img134on = new Image();img134on.src ="/eng/img/navi_thesis_on.gif"; 

// 情報エレクトロニクス学科へ
var img14off = new Image();img14off.src ="/eng/img/navi_electronics.gif"; var img14on = new Image();img14on.src ="/eng/img/navi_electronics_on.gif"; 

// お知らせへ
var img15off = new Image();img15off.src ="/eng/img/navi_info.gif"; var img15on = new Image();img15on.src ="/eng/img/navi_info_on.gif"; 
// 年間予定へ
var img151off = new Image();img151off.src ="/eng/img/navi_schedule.gif"; var img151on = new Image();img151on.src ="/eng/img/navi_schedule_on.gif"; 
// 学内伝言板へ
var img152off = new Image();img152off.src ="/eng/img/navi_dengon.gif"; var img152on = new Image();img152on.src ="/eng/img/navi_dengon_on.gif"; 
// 情報公開へ
var img153off = new Image();img153off.src ="/eng/img/navi_kokai.gif"; var img153on = new Image();img153on.src ="/eng/img/navi_kokai_on.gif"; 
// 採用情報へ
var img154off = new Image();img154off.src ="/eng/img/navi_job.gif"; var img154on = new Image();img154on.src ="/eng/img/navi_job_on.gif"; 

// ネットジャーナルへ
var img16off = new Image();img16off.src ="/eng/img/navi_journal.gif"; var img16on = new Image();img16on.src ="/eng/img/navi_journal_on.gif"; 
// 関連リンクへ
var img17off = new Image();img17off.src ="/eng/img/navi_link.gif"; var img17on = new Image();img17on.src ="/eng/img/navi_link_on.gif"; 
// 広報へ
var img18off = new Image();img18off.src ="/eng/img/navi_public.gif"; var img18on = new Image();img18on.src ="/eng/img/navi_public_on.gif"; 

// サイトマップへ
var img19off = new Image();img19off.src ="/eng/img/navi_sitemap.gif"; var img19on = new Image();img19on.src ="/eng/img/navi_sitemap_on.gif"; 
// このサイトについてへ
var img20off = new Image();img20off.src ="/eng/img/navi_about.gif"; var img20on = new Image();img20on.src ="/eng/img/navi_about_on.gif"; 
// コンタクトへ
var img21off = new Image();img21off.src ="/eng/img/navi_contact.gif"; var img21on = new Image();img21on.src ="/eng/img/navi_contact_on.gif"; 
// アクセスへ
var img200501off = new Image();img200501off.src ="/eng/img/navi_access.gif"; var img200501on = new Image();img200501on.src ="/eng/img/navi_access_on.gif"; 
}

function Off(name) { if (document.images) { document.images[name].src = eval(name + 'off.src'); }
} 
function On(name) { if (document.images) { document.images[name].src = eval(name + 'on.src'); }
}