function getSelectedValue(selectObj)
{
//	selectObj.value is NOT the selected value; see Wagner p.303
	return selectObj.options[selectObj.selectedIndex].value;
}

function getSelectedIndex(selectObj)
{
	return selectObj.selectedIndex;
}

// freq(): counts the frequency of character c in string s.
function freq(c, s)
{
	var n = 0;
	for (i=0; i < s.value.length; i++)
	{
		if (s.value.charAt(i) == c) n++;
	}
//	alert("freq() found " + n + " of " + c + " in " + s.value);
	return (n);
}

function setSelectedIndex(selectObj, i)
{
//	alert("setting selected to " + i);
	selectObj.options[i].selected = true;
}