Ajinx1

<?php

<div class="form-group has-feedback" id="state1">
    <div class="form-group input-group has-feedback">
      <select class="form-control" name="state" id="state" placeholder="Pick State" onchange="show(this)">
        </select>
         <span class="input-group-addon"><i class="fa fa-map"></i></span>
      </div>
      <span class="help-block" id="helpstate"></span>
    </div>