var oc='', ox = {};
function tc(f) {
	var cbs = f['ids[]'];
	if (cbs) {
		if (cbs.length) {
			for (var i = 0; i < cbs.length; i++) {
				with (cbs[i]) checked = !checked;
			}
		} else {
			cbs.checked = !cbs.checked;
		}
	}
}
function sr(o) {
	if (o != ox) {
		if (oc) {
			ox.className = oc;
		}
		ox = o;
		oc = o.className;
		o.className = 's';
	}
}
function show(d,k) {
	for (i = 0; i < d.length; i++) {
		d[i].style.display = i==k ? '':'none';
	}
}