/**
    * Error check the two letter US state codes
    * @param st 
    * @return boolean true if code is valid
    */
   public boolean setState(String st)
   {
     if ((st.equals("AL")) || (st.equals("AK")) || 
         (st.equals("AZ")) || (st.equals("AR")) || 
         (st.equals("CA")) || (st.equals("CO")) || 
         (st.equals("CT")) || (st.equals("DE")) || 
         (st.equals("DC")) || (st.equals("FL")) || 
         (st.equals("GA")) || (st.equals("HI")) || 
         (st.equals("ID")) || (st.equals("IL")) || 
         (st.equals("IN")) || (st.equals("IA")) || 
         (st.equals("KS")) || (st.equals("KY")) || 
         (st.equals("LA")) || (st.equals("ME")) || 
         (st.equals("MD")) || (st.equals("MA")) || 
         (st.equals("MI")) || (st.equals("MN")) || 
         (st.equals("MS")) || (st.equals("MO")) || 
         (st.equals("MT")) || (st.equals("NE")) || 
         (st.equals("NV")) || (st.equals("NH")) || 
         (st.equals("NJ")) || (st.equals("NM")) || 
         (st.equals("NY")) || (st.equals("NC")) || 
         (st.equals("ND")) || (st.equals("OH")) || 
         (st.equals("OK")) || (st.equals("OR")) || 
         (st.equals("PA")) || (st.equals("RI")) || 
         (st.equals("SC")) || (st.equals("SD")) || 
         (st.equals("TN")) || (st.equals("TX")) || 
         (st.equals("UT")) || (st.equals("VT")) || 
         (st.equals("VA")) || (st.equals("WA")) || 
         (st.equals("WV")) || (st.equals("WI")) || 
         (st.equals("WY")) || (st.equals("AS")) || 
         (st.equals("GU")) || (st.equals("MP")) || 
         (st.equals("PR")) || (st.equals("VI")) || 
         (st.equals("FM")) || (st.equals("MH")) || 
         (st.equals("PW")) || (st.equals("AA")) || 
         (st.equals("AE")) || (st.equals("AP")))
     {
      state = st;
      return true;
     }
     return false;
   }