<container style="position: absolute; top: 0px; left: 0px; width: 0px; height: 0px; z-index: 100;">
<div id="_dropBoxTemp_" style="display: none;"></div>
<!--设置背景灰色-->
<div style="background: none repeat scroll 0% 0% rgb(0, 0, 0); position: absolute; left: 0px; top: 0px; width: 1264px; height: 1008px; opacity: 0.5;"></div>
<!--可以操作-->
<div style="position: absolute; display: block; left: 165px; top: 138px;">
<a class="close" href="javascript:void(0);" >×</a>
...
</div>
</container>
主窗口
<div class="main">
...
</div>