<form name=“refreshPopover” class='form-inline input-append' style=“margin:0px”>

<label><small>Interval (seconds)</small></label><br>
<input type="number" class="input-mini" ng-model="refresh_interval">
<button type="button" class="btn" ng-click="set_interval(refresh_interval);dismiss()"><i class="icon-ok"></i></button>

</form>