function objectByID(id) {
	if (document.getElementById)
		var returnVar = document.getElementById(id);
	else if (document.all)
		var returnVar = document.all[id];
	return returnVar;
}

function toggleVisible(id) {
	var obj = objectByID(id);
	if(obj.style.display == "none") {
		obj.style.display = "block";
	} else {
		obj.style.display = "none";
	}
}