VerticalDropLocation oldVL = verticalDropLocation;
verticalDropLocation = DDUtil.getVerticalDropLocation(getElement(),
drag.getCurrentGwtEvent(), 0.2);
drag.getDropDetails().put("verticalLocation",
verticalDropLocation.toString());
HorizontalDropLocation oldHL = horizontalDropLocation;
horizontalDropLocation = DDUtil.getHorizontalDropLocation(getElement(),
drag.getCurrentGwtEvent(), 0.2);
drag.getDropDetails().put("horizontalLocation",
horizontalDropLocation.toString());
if (oldHL != horizontalDropLocation || oldVL != verticalDropLocation) {