<form name=ListForm action="edit.asp?id=<%=pid%>">
<select name="ds" onchange="this.form.submit()">
<option value="aa">aa</option>
<option value="bb">bb</option>
</select>
</form>
<select name="ds" onchange="this.form.submit()">
<option value="aa">aa</option>
<option value="bb">bb</option>
</select>
</form>
<script language=javascript>
function FormSubmit(){
document.all("LisForm").submit();
}
</script>
document.getElementById("ListForm").submit();
还要,注意执行顺序
如果还不行把Form的名字换下
那用document.getElementsByTagName("Form")[0].submit();
<select name="ds" onchange="document.forms[0].submit()">
<option value="aa">aa</option>
<option value="bb">bb</option>
</select>
</form>