var nav_img = new Array();

function load_common() {
	var urlPrefix = "http://www11.plala.or.jp/seagate/";
	// var urlPrefix = "http:\/\/" + document.domain + "\/authors\/VA025198\/";

	nav_img[0] = new Image(); nav_img[0].src= urlPrefix + "images/plus.gif";
	nav_img[1] = new Image(); nav_img[1].src= urlPrefix + "images/minus.gif";
}

function navi_init(nID) {
	if (nID != "") {
		navi_click(nID);
	}
}

function navi_click(nID) {
	if (document.getElementById(nID + "Sub").style.display == "none") {
		document.getElementById(nID + "Sub").style.display = "inline";
		document.getElementById(nID + "Img").src = nav_img[1].src;
	} else {
		document.getElementById(nID + "Sub").style.display = "none";
		document.getElementById(nID + "Img").src = nav_img[0].src;
	}
}

function arrow_over(aID) {
	var urlPrefix = "http://www11.plala.or.jp/seagate/";
	// var urlPrefix = "http:\/\/" + document.domain + "\/authors\/VA025198\/";

	document.getElementById(aID).src = urlPrefix + "images/arrow_.gif";
}

function arrow_out(aID) {
	var urlPrefix = "http://www11.plala.or.jp/seagate/";
	// var urlPrefix = "http:\/\/" + document.domain + "\/authors\/VA025198\/";

	document.getElementById(aID).src = urlPrefix + "images/arrow.gif";
}

function arrow_over(aID) {
	var urlPrefix = "http://www11.plala.or.jp/seagate/";
	// var urlPrefix = "http:\/\/" + document.domain + "\/authors\/VA025198\/";

	document.getElementById(aID).src = urlPrefix + "images/arrow_.gif";
}

function back_click() {
	if (history.length > 0) {
		history.back();
	}
}

function back_out(bID) {
	var urlPrefix = "http://www11.plala.or.jp/seagate/";
	// var urlPrefix = "http:\/\/" + document.domain + "\/authors\/VA025198\/";

	document.getElementById(bID).src = urlPrefix + "images/back.gif";
}

function back_over(bID) {
	var urlPrefix = "http://www11.plala.or.jp/seagate/";
	// var urlPrefix = "http:\/\/" + document.domain + "\/authors\/VA025198\/";

	document.getElementById(bID).src = urlPrefix + "images/back_.gif";
}

function pgp_open() {
	var urlPGP = "http://www11.plala.or.jp/seagate/pgp/index.html";
	var features = "scrollbars=no, resizable=yes, width=480, height=660";

	window.open(urlPGP, "PGP", features);
}