what.form.<% $pre %>city.style.display = 'none';
what.form.<% $pre %>city_select.style.display = '';
} else if ( what.form.<% $pre %>city.style.display == 'none' ) {
what.form.<% $pre %>city.style.display = 'none';
what.form.<% $pre %>city_select.style.display = '';
} else if ( what.form.<% $pre %>city.style.display == 'none' ) {