【代码片段】demo中下拉框根据选择变化

<pre name="code" class="html"><tr>
<span style="white-space:pre">	</span><td width="5%">36</td>
	<td width="15%" height="50">与他人关系:</td>
	<td width="30%">
<span style="white-space:pre">		</span><select id="benefitRelations" onchange="javascript:this.form.benefitRelation.value=this.value;">
		<span style="white-space:pre">	</span><option value="01">丈夫</option>
		<span style="white-space:pre">	</span><option value="02">妻子</option>
		<span style="white-space:pre">	</span><option value="03">父亲</option>
		<span style="white-space:pre">	</span><option value="04">母亲</option>
		<span style="white-space:pre">	</span><option value="05">儿子</option>
		<span style="white-space:pre">	</span><option value="06">女儿</option>
	<span style="white-space:pre">	</span></select>
		<input type="text" name="benefitRelation" id="benefitRelation" value="01"/> </td>
		<td class="comment">如是则无需填写他人详细信息</td>
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