var text = "", count = -1;

function loadInit() {
if(!document.getElementById) return;

	txtType();
}

function txtType() {

if(!document.getElementById) return;

	var obj = document.getElementById("update");
	if(!text) text = obj.firstChild.nodeValue;
	if(count >= 0) {
		obj.firstChild.nodeValue = text.substr(0, count + 1);
		obj.style.color = "blue";
}
		count ++;
		if(count < text.length)
			setTimeout("txtType();", 50);

}

function miseru1() {
document.getElementById("navi_shokai").style.visibility = "visible";


}

function kakusu1() {
document.getElementById("navi_shokai").style.visibility = "hidden";
}

function miseru2() {
document.getElementById("navi_seito").style.visibility = "visible";
}

function kakusu2() {
document.getElementById("navi_seito").style.visibility = "hidden";
}

function miseru3() {
document.getElementById("navi_koyo").style.visibility = "visible";
}

function kakusu3() {
document.getElementById("navi_koyo").style.visibility = "hidden";
}