function chimg(big, small) {
	bimg = document.getElementById('pic' + big).src;
	simg = document.getElementById('pic' + small).src;
	href = document.getElementById('link' + big).href;

	nbimg = simg.replace(/screenk/, "screenm");
	nsimg = bimg.replace(/screenm/, "screenk");
	nhref = simg.replace(/screenk/, "screeng");

	document.getElementById('pic' + big).src = nbimg;
	document.getElementById('pic' + small).src = nsimg;
	document.getElementById('link' + big).href = nhref;

	return false;
}