请输入关键字/词

 

   <input type="text" value="输入查询关键字/词" onfocus="if(value==defaultValue){value='';this.style.color='#000'}"
            onblur="if(!value){value=defaultValue;this.style.color='#999'}" style="color: #999999" />
        <input type="button" value="查询" />