IE下的CSS渐变滤镜，实现图片的渐入渐出
注意：CSS的渐变滤镜是IE的特有扩展，在Opera 8和Firefox 1中仍能正常使用，但是少了渐变效果。
cs代码：
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DirectoryInfo dic = new DirectoryInfo(Server.MapPath("~/Repeater/images/"));
repPhtotos.DataSource = dic.GetFiles("*.jpg");
repPhtotos.DataBind();
}
}
html代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
.photo
{
width:400px;
background-color:White;
filter:progid:DXImageTransform.Microsoft.Fade(duration=2);
}
</style>
<script type="text/javascript">
var photos = new Array();
window.setInterval(ShowImage, 5000);
function ShowImage() {
if (photos.length > 0) {
var index = Math.floor(Math.random() * photos.length);
var img = document.getElementById("imgph");
img.src = photos[index];
if (img.filters) {
img.filters[0].Apply();
img.filters[0].Play();
}
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<img id="imgph" alt="" class="photo" />
<script type="text/javascript">
<asp:Repeater ID="repPhtotos" runat="server">
<ItemTemplate>
<%#Eval("Name","photos.push('images/{0}')") %>
</ItemTemplate>
</asp:Repeater>
ShowImage();
</script>
</div>
</form>
</body>
</html>
