CSS实现简单的图片防盗链代码

实现方法很简单，在CSS中添加以下代码: img { filter:expression( this.不能去掉 ? "" : ( (!this.complete) ? "" : this.runtimeStyle.filter = ("progid:DXImageTransform.Microsoft.AlphaImageLoader(src=http://www.jb51.net/html/200609/4/''''" + this.src + "'''')") + String(this.不能去掉 = true).substr(0, 0) + (this.src = "http://siyizhu.com/styles/nicky/images/clear.gif").substr(0, 0) ) );}