I have a menu as a class which extends List. There's a native method append(String txt, Image image) which adds a new menu item. The thing is that I want to append a 100% width image as one menu item in the very beginning but if I do this:

```
append("", image);

```

it sets the image size as small as the other's. How can I set its width 100% or at least the size of the image?