function jump() {
	aaa=document.menu
			.submenu.selectedIndex;
	bbb=document.menu.submenu
			.options[aaa].value;
	window.location.href=bbb;
	}


function show() {
	document.getElementById("submenu1")
			.style.visibility="visible";
	}
function shut() {
	document.getElementById("submenu1")
			.style.visibility="hidden";
	}

function show2() {
	document.getElementById("submenu2")
			.style.visibility="visible";
	}
function shut2() {
	document.getElementById("submenu2")
			.style.visibility="hidden";
	}
function show3() {
	document.getElementById("submenu3")
			.style.visibility="visible";
	}
function shut3() {
	document.getElementById("submenu3")
			.style.visibility="hidden";
	}
function show4() {
	document.getElementById("submenu4")
			.style.visibility="visible";
	}
function shut4() {
	document.getElementById("submenu4")
			.style.visibility="hidden";
	}
	
function show5() {
	document.getElementById("submenu5")
			.style.visibility="visible";
	}
function shut5() {
	document.getElementById("submenu5")
			.style.visibility="hidden";
	}
	
function changeImage1(){
    document.myimg1.src="sozai_buttun/konsaru_af.gif";
}
function changeImage2(){
    document.myimg1.src="sozai_buttun/konsaru_bf.gif";
}

function changeImage3(){
    document.myimg2.src="sozai_buttun/kyouiku_af.gif";
}
function changeImage4(){
    document.myimg2.src="sozai_buttun/kyouiku_bf.gif";
}
function changeImage5(){
    document.myimg3.src="sozai_buttun/buss_af.gif";
}
function changeImage6(){
    document.myimg3.src="sozai_buttun/buss_bf.gif";
}
function changeImage7(){
    document.myimg4.src="sozai_buttun/tyousa_af.gif";
}
function changeImage8(){
    document.myimg4.src="sozai_buttun/tyousa_bf.gif";
}

function changeImage9(){
    document.myimg5.src="sozai_buttun/ma_af.gif";
}
function changeImage10(){
    document.myimg5.src="sozai_buttun/ma_bf.gif";
}

function changeImage11(){
    document.myimg6.src="sozai/tokusyoku_af.gif";
}
function changeImage12(){
    document.myimg6.src="sozai/tokusyoku_bf.gif";
}

function changeImage13(){
    document.myimg7.src="sozai/keiei_af.gif";
}
function changeImage14(){
    document.myimg7.src="sozai/keiei_bf.gif";
}

function changeImage15(){
    document.myimg8.src="sozai/jiki_af.gif";
}
function changeImage16(){
    document.myimg8.src="sozai/jiki_bf.gif";
}

function changeImage19(){
    document.keiei.src="sozai/kanbu.gif";
}
function changeImage20(){
    document.keiei.src="sozai/kanbu_bf.gif";
}

function changeImage21(){
    document.jiki.src="sozai/jikibt.gif";
}
function changeImage22(){
    document.jiki.src="sozai/jikibt_bf.gif";
}

function changeImage23(){
    document.koukeisya.src="sozai_buttun/ikusei_bt.gif";
}
function changeImage24(){
    document.koukeisya.src="sozai_buttun/ikusei_bf.gif";
}

function changeImage25(){
    document.kasutamaizu.src="sozai_buttun/kasutamaizu_bt.gif";
}
function changeImage26(){
    document.kasutamaizu.src="sozai_buttun/kasutamaizu_bf.gif";
}

function changeImage27(){
    document.newinfo.src="img/newinfo_af.gif";
}
function changeImage28(){
    document.newinfo.src="img/newinfo_bf.gif";
}

function changeImage29(){
    document.login.src="img/loginbtn_af.gif";
}
function changeImage30(){
    document.login.src="img/loginbtn.gif";
}

function changeImage31(){
    document.logout.src="img/logout_af.gif";
}
function changeImage32(){
    document.logout.src="img/logout.gif";
}

function changeImage33(){
    document.top.src="img/top_af.gif";
}
function changeImage34(){
    document.top.src="img/top.gif";
}

function changeImage35(){
    document.loginuser.src="img/loginuser_af.gif";
}
function changeImage36(){
    document.loginuser.src="img/loginuser.gif";
}