public static function absoluteCoordinate($pCoordinateString = 'A1')
	{
		if (strpos($pCoordinateString,':') === FALSE && strpos($pCoordinateString,',') === FALSE) {
			// Split out any worksheet name from the coordinate
			$worksheet = '';
			$cellAddress = explode('!',$pCoordinateString);
			if (count($cellAddress) > 1) {
				list($worksheet,$pCoordinateString) = $cellAddress;
			}
			if ($worksheet > '')	$worksheet .= '!';

			// Create absolute coordinate
			list($column, $row) = self::coordinateFromString($pCoordinateString);
			$column = ltrim($column,'$');
			$row = ltrim($row,'$');
			return $worksheet . '$' . $column . '$' . $row;
		}

		throw new PHPExcel_Exception('Cell coordinate string can not be a range of cells');
	}