function toggle(obj) { ///// toggle object visibility
	if (document.getElementById){
		target = document.getElementById(obj);
		if (target.style.display == "none") {
			target.style.display = "";
		} else {
			target.style.display = "none";
		}
	}
}

function toggleForm(type) { ///// toggle object visibility
	toggle('toggle'+type+'_cl');
	toggle('toggle'+type+'_op');
	return false;
}