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");
	}
}