function getPositionForIcon() {
    var camPos = Camera.position;
    var camRot = Camera.orientation;
    return Vec3.sum(camPos, Vec3.multiplyQbyV(camRot, {x: 0, y: 0, z: -1}));
}

var overlayTest = Overlays.addOverlay("image3d", {
            position: getPositionForIcon(),
            drawInFront: true,
            isFacingAvatar: true,
            url: "file:///c:/angus/javascript_bak/gesture/outline.png",
            alpha: 1.0,
            parentID: MyAvatar.sessionUUID
        });
		
		
function shutdown() { 
        Overlays.deleteOverlay(overlayTest);
}

Script.scriptEnding.connect(shutdown);