I have a problem with tree grid

When i start to select the nodes from the tree with up and down arrow from keyboard, the javascript clicks on those items, the hover selection is blue and it needs to yellow to select the item but not to click on it. How can i make the selector not to click on those nodes? I want to make this binding only from javascript in bodyKeyPress function.

Thanks !

SOLVED: by adding the this.selection.deselect(record); in rowClick function ;