<!-- dojo 1.x: all is well -->
<button dojotype="li.widget.Button" type="button" class="flat">Flat button</button>

<!-- dojo 1.6 html5 type and params attr -->
<button data-dojo-type="li.widget.Button" data-dojo-params="type:'button', class:'primary'">Primary button</button>

<!-- dojo 1.6 html5 type and native attrs: DOES NOT PICK UP ATTRS! -->
<button data-dojo-type="li.widget.Button" type="button" class="secondary">Secondary button</button>