剧情的落幕

#pic1{background:url(images/pic1.jpg);width:100px; height:100px;z-index:1000;position:relative; } #pic2{height:100px;width:100px; margin-top:-40px; background:url(images/pic2.png) no-repeat;_filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/pic2.png'); _background-image: none; z-index:0;position:relative;} <div id="pic1"></div> <div id="pic2"></div>
_filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/pic2.png');
_background-image: none;
用于支持ie6.0的png图片透明
z-index：div的层叠顺序，值越大，越在底层。