function SetDefaultFocus() {
	var oMenuTable = document.getElementById('MenuTable');
	oMenuTable.style.visibility = "hidden";
	
	if (SetFocus(itemToSetFocus)) {return;}
	if (SetFocus('txtNTTo')) {return;}
	if (SetFocus('txtNTValidityFrom')) {return;}
}

function SetFocus(itemName) {
	var item = document.getElementById(itemName);
	if (!item || item.disabled) {return false;}
	if (item.select) {item.select()};
	item.focus();
	return true;
}