function checkSmileys() {
	var cBoxes = document.getElementsByTagName("input");
	for (var i=0; i<cBoxes.length; i++) {
		var inputtype = cBoxes[i].getAttribute("type");
		if ((inputtype == "checkbox") && (cBoxes[i].checked)) { return true; }
	}
	return false;
}

function selectAll() {
	var cBoxes = document.getElementsByTagName("input");
	for (var i=0; i<cBoxes.length; i++) {
		var inputtype = cBoxes[i].getAttribute("type");
		if (inputtype == "checkbox") { cBoxes[i].checked = true }
	}
}
function selectNone() {
	var cBoxes = document.getElementsByTagName("input");
	for (var i=0; i<cBoxes.length; i++) {
		var inputtype = cBoxes[i].getAttribute("type");
		if (inputtype == "checkbox") { cBoxes[i].checked = false }
	}
}
function selectInvert() {
	var cBoxes = document.getElementsByTagName("input");
	for (var i=0; i<cBoxes.length; i++) {
		var inputtype = cBoxes[i].getAttribute("type");
		if (inputtype == "checkbox") { cBoxes[i].checked = cBoxes[i].checked == false }
	}
}