Input submit ne fonctionne pas

<form class="form-horizontal" role="form" method="POST" action="smasher.php" enctype="multipart/form-data">


        <div class="form-group">
          <label for="inputPassword" class="col-sm-3 control-label">Image</label>
          <div class="col-sm-6">
             <input id="input1" class="pull-left" type="file" name="fichier">
          </div>
        </div>
		
		
		<br><br>
		
        <div class="form-group">
          <label for="inputPassword" class="col-sm-3 control-label">Message d'accompagnement</label>
          <div class="col-sm-6">
            <input class="form-control" name="smash_photo_texte" type="text">
          </div>
        </div>
		
		
      </form>
					
					
						
	<br><br>	
	
	<center>
<input class="btn btn-lg btn-success" type="submit" name="submit"  value="Envoyer" style="width:300px;" />