当图片不存在时载入默认图片的代码
<!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>
<meta http-equiv="content-type" content="text/html; charset=gb2312" />
<title>载入默认图片</title>
</head>
<body>
<div id="container"></div>
<script language="javascript">
<!--
window.onload=function(){
var container = document.getelementbyid("container");
var thumbimg = container.appendchild(document.createelement('img'));
thumbimg.src = "20091214920298336.jpg" ; //不存在的图片
thumbimg.onerror = function(){thumbimg.src='http://www.jb51.net/images/logo.gif';};
}
//-->
</script>
</body>
</html>