function hideBut(butNo)
{
	if(butNo==0) document.corp.src="/images/chi/menubar/corp.gif";
	if(butNo==1) document.biz.src="/images/chi/menubar/biz.gif";
	if(butNo==2) document.prod.src="/images/chi/menubar/prod.gif";
	if(butNo==3) document.ind.src="/images/chi/menubar/case.gif";
	if(butNo==4) document.news.src="/images/chi/menubar/news.gif";
	if(butNo==5) document.career.src="/images/chi/menubar/career.gif";
	if(butNo==6) document.bhome.src="/images/chi/menubar/home.gif";
	if(butNo==7) document.iconlocate.src="/images/chi/icon_loca.gif";
	if(butNo==8) document.iconmail.src="/images/chi/icon_mail.gif";
	if(butNo==9) document.iconsitemap.src="/images/chi/icon_sitemap.gif";
	if(butNo==10) document.locate.src="/images/chi/location.gif";
	if(butNo==11) document.iconeng.src="/images/chi/icon_eng.gif";
}

function showBut(butNo)
{
	if(butNo==0) document.corp.src="/images/chi/menubar/corp_on.gif";
	if(butNo==1) document.biz.src="/images/chi/menubar/biz_on.gif";
	if(butNo==2) document.prod.src="/images/chi/menubar/prod_on.gif";
	if(butNo==3) document.ind.src="/images/chi/menubar/case_on.gif";
	if(butNo==4) document.news.src="/images/chi/menubar/news_on.gif";
	if(butNo==5) document.career.src="/images/chi/menubar/career_on.gif";
	if(butNo==6) document.bhome.src="/images/chi/menubar/home_on.gif";
	if(butNo==7) document.iconlocate.src="/images/chi/icon_loca_on.gif";
	if(butNo==8) document.iconmail.src="/images/chi/icon_mail_on.gif";
	if(butNo==9) document.iconsitemap.src="/images/chi/icon_sitemap_on.gif";
	if(butNo==10) document.locate.src="/images/chi/location_on.gif";
	if(butNo==11) document.iconeng.src="/images/chi/icon_eng_on.gif";
}