<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<script>
function yulan()
{
var fileext=document.form1.UpFile.value.substring(document.form1.UpFile.value.lastIndexOf("."),document.form1.UpFile.value.length);
fileext=fileext.toLowerCase();
if ((fileext!='.jpg')&&(fileext!='.gif')&&(fileext!='.jpeg')&&(fileext!='.png')&&(fileext!='.bmp'))
{
alert("对不起，系统仅支持标准格式的照片，请您调整格式后重新上传，谢谢 ！");
document.form1.UpFile.focus();
}
else
{
//alert(''+document.form1.UpFile.value);
document.getElementById("preview").innerHTML="图片预览区<img src='"+document.form1.UpFile.value+"' style='border:6px double #ccc';padding:5px;>"
}
}
</script>
<style>
#preview{
border: 1px dashed #F00;
width:200px;
height:200px
}
</style>
</HEAD>
<BODY>
上传图片前御览
<form name="form1" method="POST" enctype="multipart/form-data">
<input type="file" name="UpFile" size="46" οnchange="yulan()">
<div id="preview">图片预览区</div>
</form>
</BODY>
</HTML>
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