if (document.images) {
	mnu1on = new Image();
	mnu1on.src = "../common/images/menu_btn01on.gif";
	mnu1off = new Image();
	mnu1off.src = "../common/images/menu_btn01.gif";
	mnu2on = new Image();
	mnu2on.src = "../common/images/menu_btn02on.gif";
	mnu2off = new Image();
	mnu2off.src = "../common/images/menu_btn02.gif";
	mnu3on = new Image();
	mnu3on.src = "../common/images/menu_btn03on.gif";
	mnu3off = new Image();
	mnu3off.src = "../common/images/menu_btn03.gif";
	mnu4on = new Image();
	mnu4on.src = "../common/images/menu_btn04on.gif";
	mnu4off = new Image();
	mnu4off.src = "../common/images/menu_btn04.gif";
	mnu5on = new Image();
	mnu5on.src = "../common/images/menu_btn05on.gif";
	mnu5off = new Image();
	mnu5off.src = "../common/images/menu_btn05.gif";
	mnu6on = new Image();
	mnu6on.src = "../common/images/menu_btn06on.gif";
	mnu6off = new Image();
	mnu6off.src = "../common/images/menu_btn06.gif";

	mnu7on = new Image();
	mnu7on.src = "../common/images/head_btn01on.gif";
	mnu7off = new Image();
	mnu7off.src = "../common/images/head_btn01.gif";
	mnu8on = new Image();
	mnu8on.src = "../common/images/head_btn02on.gif";
	mnu8off = new Image();
	mnu8off.src = "../common/images/head_btn02.gif";
}
function imgOn(imgName) {
	if (document.images) {
		document[imgName].src=eval(imgName+"on.src");
	}
}
function imgOff(imgName) {
	if (document.images) {
		document[imgName].src=eval(imgName+"off.src");
	}
}

// windowopen
var app = navigator.appName.charAt(0);
var ver = navigator.appVersion.charAt(0);
function newwin(url,tgt,wx,wy){
	x = (screen.width  - wx) / 2;
	y = (screen.height - wy) / 2;
	if ( (app == "N" && ver > 2) || (app == "M" && ver > 3) ) {
	nw = window.open(url,tgt,"width="+wx+",height="+wy+",directories=no,location=no,menubar=no,toolbar=no,scrollbars=yes,resizable=yes,"+"left="+x+",top="+y);
	nw.focus();
	return false;
	} else {
	return true;
	}
}