浮层浮动在select的标签上

例如


<!-- ------------上传大附件box begin------------------------>
<div id="vastUpload" class="photo">
     <iframe style="z-index:-1; width: 400px; height: 390px;border: 0px;"> </iframe>
    <div class="photo_iframe"> 
<div id="fileUploadTitle" class="photo_A" >
<div class="photo_AA">
上传大附件
</div>
<a href="javascript:void(0);" class="photo_AB"
onclick="hideBox('vastUpload');" title="关闭"> </a>
</div>
<div class="photo_B" onmousedown="var e=event||window.event;if(document.all){e.cancelBubble=true}else{e.preventDefault()}">
<div class="photo_BA">
      <span id="spanButtonPlaceholder1"></span>
</div>
<div class="photo_BB" id="fsUploadProgress1">
      <span id="spanButtonPlaceholder1"></span>
  <input id="btnCancel1" type="button" value="Cancel Uploads" onclick="cancelQueue(upload1);" disabled="disabled" style="margin-left: 2px; height: 22px; font-size: 8pt;display: none;" />
</div>
</div>
<div class="photo_C" onmousedown="var e=event||window.event;if(document.all){e.cancelBubble=true}else{e.preventDefault()}">
<input type="button" value="关闭" class="photo_CA" onclick="hideBox('vastUpload');">
</div>
</div>
</div>

<script type="text/javascript">
    new Drag($("#vastUpload")[0]);
</script>
<!-- ------------上传大附件box end---------------------- -->



/*===============================大附件上传框=====================================*/

.photo{width: 400px; height: 390px;position: absolute; top:40px; left: 60px; display: none;z-index: 10;}
.photo_iframe{width: 400px; height: 390px; background: #89B5E9;position: absolute;left: 0px ;top: 0px;border:1px solid #4E86C4; }
.photo_A{width:99%; height: 30px; float: left;}
.photo_AA{width: auto; height: 30px; float: left; line-height: 30px; color: #FFFFFF; font-weight: bold; font-size: 13px; margin-left: 5px; display: inline;}
.photo_AB{width: 16px; height: 16px; background: url('/webmail/resources/editor/cross.gif') no-repeat; float: right; margin: 5px 5px 0px 0px; display: inline;}

.photo_B{width:100%; height:330px; float: left;background-color: #EFF5FB; }
.photo_BA{width:300px;height: 40px;float: left;margin: 25px 0px 0px 15px;display: inline;}
.photo_BB{width:377px;height: 250px;float: left;margin: 0px 5px 10px 5px;background-color: #FFFFFF;border: 1px solid #A7C5E2;overflow-y:scroll;}

.photo_C{width: 100%;height: 30px;float: left;background-color: #E0ECF9;}
.photo_CA{width: 60px;height: 20px;float: right;margin: 5px 10px 0px 0px;}
/*===============================大附件上传-=====================================*/