无法将项目发布到我的控制器？ 为什么？

I am using modal window to post the the values to the controller .

<form action="<?php echo base_url();?>Users/sms/" id="form" method="post" class="form-horizontal" enctype="multipart/form-data">

buttons

<button type="button" id="custom" class="btn btn-warning" disabled="disabled">
    Custom Msg
</button>
<button type="button" id="initial"  class="btn btn-primary">
    Initial
</button>

no response in my screen. i cannot able find the error. in popup window showing nothing. when i click the button no response. suggestion please

Type should be submit instead of button to post the data.