I'm working on Java, SmartGWT 2.5 & Mozilla FF 3.6.x. I'm using Tree, TreeGrid & TreeNode in my application. I need to drag a node and while dragging I have to see the other nodes on which mouse will pass with changed background color. I tried with dragStart, dragStop, onCellOver, onCellOut and dragMove, but maybe I don't make a good combination of them. So, how can be these events combinated to get what I need?