function mainchange0(imagename) {
	document.mainimage.src=imagename;
	document.waku0.src="img/waku-img1.gif";
	document.waku1.src="img/waku-img0.gif";
	document.waku2.src="img/waku-img0.gif";
}

function mainchange1(imagename) {
	document.mainimage.src=imagename;
	document.waku0.src="img/waku-img0.gif";
	document.waku1.src="img/waku-img1.gif";
	document.waku2.src="img/waku-img0.gif";
}

function mainchange2(imagename) {
	document.mainimage.src=imagename;
	document.waku0.src="img/waku-img0.gif";
	document.waku1.src="img/waku-img0.gif";
	document.waku2.src="img/waku-img1.gif";
}