function dgid(obj)
{
	return document.getElementById(obj);
} // function dgid(obj)

function displayDIVBlock(id) {
	var obj = document.getElementById(id);
	if (obj != null) obj.style.display = "block"
}

function hideDIVBlock(id) {
	var obj = document.getElementById(id);
	if (obj != null) obj.style.display = "none"
}