mv home.htm       home.html
mv new.htm        new.html
mv os_cobnd.htm   os_cobnd.html
mv os_harju.htm   os_harju.html
mv os_morse.htm   os_morse.html
mv os_pef.htm     os_pef.html
mv os_qchem.htm   os_qchem.html
mv os_salt.htm    os_salt.html
mv os_torg.html os_torg.html
mv index.htm      index.html
mv os_angg.htm    os_angg.html
mv os_cov.htm     os_cov.html
mv os_molf.htm    os_molf.html
mv os_non.htm     os_non.html
mv os_pre.htm     os_pre.html
mv os_qcpro.htm   os_qcpro.html
mv os_sol.html   os_sol.html