<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<form method="post" enctype="multipart/form-data">
<div class="container"> <br />
<div class="row">
<div class="col-md-12">
<div class="panel panel-default">
<div class="panel-heading"><strong>Upload files</strong> <small> </small></div>
<div class="panel-body">
<div class="input-group file-preview">
<input placeholder="" type="text" class="form-control file-preview-filename" disabled="disabled">
<span class="input-group-btn">
<button type="button" class="btn btn-default file-preview-clear" style="display:none;"> <span class="glyphicon glyphicon-remove"></span> Clear </button>
<div class="btn btn-default file-preview-input"> <span class="glyphicon glyphicon-folder-open"></span> <span class="file-preview-input-title">Browse</span>
<input type="file" accept="text/cfg" name="input-file-preview"/>
</div>
<button type="button" class="btn btn-labeled btn-primary"> <span class="btn-label"><i class="glyphicon glyphicon-upload"></i> </span>Upload</button>
</span> </div>
<br />
<div class="panel panel-default">
<div class="row clearfix">
<div class="col-md-12 column">
<table class="table table-bordered table-hover" id="tab_logic">
<thead>
<tr >