function setCheckboxes(theForm, elementName, isChecked)
{
	var chkboxes = document.forms[theForm].elements[elementName];
	var count = chkboxes.length;
	if ( count )
	{
		for (var i = 0; i < count; i++)
		{
			chkboxes[i].checked = isChecked;
		}
	}
	else
	{
		chkboxes.checked = isChecked;
	}
	return true;
}