ImageSelector.html

<div class="ImageSelector">
    <input type="text" dojoType="dijit.form.TextBox" readOnly="true"
           dojoAttachPoint="at_imageTextBox"></input>
    <button dojoType="dijit.form.Button" dojoAttachPoint="add" >New</button>
    <button dojoType="dijit.form.Button" dojoAttachPoint="preview" >Preview</button>
</div>