用js , 提交到 open 的窗口中。<form action="upfile.asp" method="post" name="form1" enctype="multipart/form-data">...
win=window.open("","xxx","....");
form1.target="xxx";
form1.submit();
...
win=window.open("","xxx","....");
form1.target="xxx";
form1.submit();
...
....
</form>
<iframe width=0 height=0 name="hiddenFrame"></iframe>