漂亮的弹框

-------------------------button------css

.setButton{
background:#dddddd;
border: #888888 1px solid;
FILTER: progid:DXImageTransform.Microsoft.Gradient(startColorStr='#ffffff', endColorStr='#E4FfFC', gradientType='0');

}

--------------------------弹框css

#changetimewindow
{
 border-right: #cccccc 1px solid;
 line-height: 180%;
    border-top: #cccccc 1px solid;
    padding-left: 5px;
    padding-top: 2px;
    padding-right: 5px;
    left: 376px;
    z-index: 100;
    visibility: hidden;
    padding-bottom: 1px;
    border-left: #cccccc 1px solid;
    color: #000000;
    400px;
    height:30px;
    border-bottom: #cccccc 1px solid;
    position: absolute;
    top: 139px;
    background-color: #ffffff;
    text-align: left;
    font-size:12px;
    FILTER: progid:DXImageTransform.Microsoft.Gradient(startColorStr='#ffffff', endColorStr='#E4F2FC', gradientType='0');
}

---------------------------js

 //显示频率框
   function showrate(){
    $('#ratetab').val($g_tab_circle_frequency/1000);
    $('#rateread').val($g_query_frequency/1000);
   // positionTip("changetimewindow");
    var a = document.getElementById("changetimewindow");
    //设置位置
    var b = document.getElementById("exit");
    a.style.top = (parseInt(b.offsetHeight)+40)+"px";;
    a.style.left = (parseInt(b.offsetLeft)+120)+"px";
    //显示
    a.style.visibility = "visible";
   }
   //取消
   function canclerate(){
    var a = document.getElementById("changetimewindow");
    a.style.visibility = "hidden";
   }

---------------------------jsp

<div id="changetimewindow" class="changetimewindow">
  <table>
   <tr>
    <td>标签滚动频率(秒)：</td>
    <td><input type="text"  id="ratetab"  style="60px;"/></td>
   </tr>
   <tr>
    <td>后台读取频率(秒)：</td>
    <td><input type="text"  id="rateread"  style="60px;"/></td>
   </tr>
   
   <tr>
    <td align="center">示忙</td>
    <td>
     <input type="button" value="开启" onclick="javascript:alert('开启')" class="setButton"/>
    </td>
   </tr>
   <tr>
    <td></td>
    <td>
     <table>
      <tr>
        <td>告警</td>
        <td><input type="text"  id="businotice1"  style="50px;"/></td>
      </tr>
      <tr>
        <td>预警</td>
        <td><input type="text"  id="businotice2"  style="50px;"/></td>
       </tr>
       <tr>
        <td>正常</td>
        <td><input type="text"  id="businotice3"  style="50px;"/></td>
      </tr>
     </table>
    </td>
   </tr>
   <tr>
    <td align="center">
    <input type="button" value="确定" onclick="javascript:okrate()" class="setButton"/>
    </td>
    <td>
    <input type="button" value="关闭" onclick="javascript:canclerate()" class="setButton"/>
    </td>
   </tr>
  </table>
 </div>