function sm()
{
document.form2.name="name";
document.form2.location="http://www.sina.com";
......照此方法改变其他控件的属性
}
{
document.form2.name="name";
document.form2.location="http://www.sina.com";
......照此方法改变其他控件的属性
}
<input name="user" type="text" id="user" >
<input name="pass" type="text" id="password2" >
<input type="submit" name="Submit" value="提交">
<select name="mq" id="mq" onchange="javascript:sm(form);">
<option value="教务处">教务处</option>
<option value="163.com">163.com</option>
<option value="126.com" selected>126.com</option>
</select>
<input type=submit>
</form>
<script>
function sm(form){
document.form2.name="form1"
document.form2.action="index.asp"
document.form2.user.name="userid"
document.form2.pass.name="password"
}
</script>