function block (item, nr) {

	if (item == "0") { nr = "linkon" + nr; on = 'inline'; }
	if (item == "1") { nr = "linkoff" + nr; on = 'inline'; }
	if (item == "2") { nr = "content" + nr; on = 'block'; }

	if (document.layers) {
		var current = (document.layers[nr].display == 'none') ? on : 'none';
		document.layers[nr].display = current;

	} else if (document.all) {
		var current = (document.all[nr].style.display == 'none') ? on : 'none';
		document.all[nr].style.display = current;

	} else if (document.getElementById) {
		var current = (document.getElementById(nr).style.display == 'none') ? on : 'none';
		document.getElementById(nr).style.display = current;
	}
	
	document.cookie = "" + nr + "=" + current;
}