jQuery droparea

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="droparea.js"></script>

<div class="droppable">
    <input type="file" name="my_image" data-post="/upload_my_image?parent_model_id=7" data-crop="true" />
</div>

$('.droppable').droparea({
	instructions: "",
	start: function() {
		alert('Let\'s rock!');
	}
});