- the "alt" attribute is required on <img/> to be valid XHTML strict - minor cleanup
- the "alt" attribute is required on <img/> to be valid XHTML strict
- minor cleanup

libexpat/libexpat,tiran/expat,libexpat/libexpat,libexpat/libexpat,tiran/expat,libexpat/libexpat,tiran/expat,libexpat/libexpat,tiran/expat,libexpat/libexpat