struts中select无法提交到form的问题

Question

Form应该放在Select外面吧<form name="Lmform" method="post" action="<%= request.getContextPath()%>/lowBoardAction.do>">
<select name="changeLm" onChange="changeLm()">
  <option selected>跳转论坛至...</option>
     <logic:iterate id="boarddata" name="boardlist" > 
       <option style=BACKGROUND-COLOR:#75D0D0 value=0>╋ <bean:write name="boarddata" property="boardname" /></option>
       <logic:iterate id="sonboarddata" name="boarddata" property="sonbdlist">
                <html:hidden name="sonboarddata"  property="lmid"/>
                    <option>　├<bean:write name="sonboarddata" property="cname" /></option> 
         
       </logic:iterate>
     </logic:iterate>
   </select></form>

Answer 1

form放在外面
在javascript里面改actionvar fm="你要提交的form"
fm.action="...."
fm.submit()