def getTargetLink(desired_index, url_table):
    """
    Return download link

    @type  desired_index: number
    @param desired_index: Desired index
    @type  url_table: dict
    @param url_table: name-to-link

    @return: Download link
    """
    index = 0
    for key in url_table:
        index = index + 1
        if desired_index == index:
            return url_table[key]
    return None