[web2py] setting width of dropdown in TABLE/SELECT

[Auden RovelleQuartz]

the following code snippet:

{
       form=FORM(TABLE(TR("some field label",SELECT(_type="select",
_name="field_name", \
                                                        *[OPTION("$" +
str(cost) + " " + x.item)\
                                                          for x in
db().select(db.item_list.ALL, orderby = db.item_list.max_cost)])),
}



would render a dropdown box

what is the syntax to set the width of that drop down box?