EventUtil.addHandler(dm, 'dragstart', function(e) {
e.dataTransfer.setData(format, 'Dragme');
e.dataTransfer.effectAllowed = effect;
var target = EventUtil.getCurrentTarget(e);
target.style.backgroundColor = 'blue';
target.style.cursor = 'move'; // You can do this or use a css class to change the cursor
return true;
});