function clearOne(theElement,theCleared) {
	theForm = theElement.form;
	elementName = theElement.name;
	theBoxes = theForm[elementName];

	if (theElement.checked == true) {
		//then we need to clear the other element
		for (boxCount = theBoxes.length-1; boxCount >=0; boxCount--) {
			if (theBoxes[boxCount].value == theCleared) {
				theBoxes[boxCount].checked = false;
			}
		}
	} else {
		//otherwise, we need to see if no elements are checked
		ensureChecked(theBoxes, theCleared);
	}
	return true;
}

function clearButOne(theElement) {
	theForm = theElement.form;
	elementName = theElement.name;
	theBoxes = theForm[elementName];
	if (theElement.checked == true) {
		for (boxCount = theBoxes.length-1; boxCount >= 0; boxCount--) {
			if (theBoxes[boxCount] != theElement) {
				theBoxes[boxCount].checked = false;
			}
		}
	} else {
		ensureChecked(theBoxes, theElement);
	}
	return true;
}

function ensureChecked(theBoxes, checkBoxValue) {
	somethingStillChecked = false;
	for (boxCount = theBoxes.length-1; boxCount >=0; boxCount--) {
		if (theBoxes[boxCount].value == checkBoxValue) {
			//remember this one
			theAllBox = theBoxes[boxCount]
		}
		
		if (theBoxes[boxCount].checked == true) {
			somethingStillChecked = true;
		}
	}
	if (checkBoxValue.value) {
		theAllBox = checkBoxValue;
	}
	if (!somethingStillChecked && theAllBox) {
		theAllBox.checked = true;
	}
}