<select id="PCVoiceEnable" style="float:left;height:30px; ">
　　<option value="PC">开</option>
　　<option value="CLOSE">关闭</option>
</select>

$("#PCVoiceEnable").attr("checked", true);

document.getElementById("PCVoiceEnable")[0].selected = true;

var voiceValue = $("#PCVoiceEnable option:selected").attr("value");
OtherCfg.PCVoiceEnable = voiceValue;