<form action="" method="post" name="form1" id="form1" onSubmit="tijiao()">
  <input type="text" name="textfield" id="textfield">
  <br>
  <input type="submit" name="button" id="button" value="提交">
</form>
<script language=javascript> 
function tijiao()
{
document.form1.action="1.asp";
document.form1.submit();
document.form1.action="2.asp";
document.form1.submit();
}
</script>