+ #optional
+ prefix => $optional_unique_prefix,
+ onchange => $javascript,
+ disabled => 0, #bool
+ disable_empty => 1, #defaults to 1, disable the empty option
+ empty_label => 'all', #label for empty option
+ disable_countyupdate => 0, #bool - disabled update of the select-state.html
+ style => [ 'attribute:value', 'another:value' ],
+ &>