function thide(n) {
	var q=document.getElementById('cc-'+n);
	var qh=document.getElementById('sh-'+n);
	if (!q || !qh) return;
	if (q.style.display == "none") {
		q.style.display = "block";
		qh.innerHTML = "hide";
	} else {
		q.style.display = "none";
		qh.innerHTML = "show";
	}
}