动态控制一个控件的class
<style>
.input1 {color:red}
.input2 {color:blue}
</style>
<tr>
<input type="radio" value="1" name="send_order"
onclick="words.className='input1'">是
<input type="radio" value="0" name="send_order"
onclick="words.className='input2'">否
</tr>
<tr>
<input type="text" size="45" class="input2" name="words">
</tr>
.input1 {color:red}
.input2 {color:blue}
</style>
<tr>
<input type="radio" value="1" name="send_order"
onclick="words.className='input1'">是
<input type="radio" value="0" name="send_order"
onclick="words.className='input2'">否
</tr>
<tr>
<input type="text" size="45" class="input2" name="words">
</tr>