Как изменить изображение при наведении курсора мыши (наведении)

или , который можно легко решить, изменив background или background-image атрибут : hover в CSS) при наведении курсора мыши (наведении), как кнопка удаления избранного тега на домашней странице stackoverflow, What are the disadventages of that? I can think about: Difficulties with using native AS3 libraries. Difficulity of debugging after language translation....

I'm thinking about using Haxe in place of AS3.
What are the disadventages of that? I can think about:

• Difficulties with using native AS3 libraries.
• Difficulity of debugging after language translation.
• Haxe is quite young, it may have some rough edges. Does it?

Does any one of you have expirience with Haxe dark sides?

What are the adventages? I've heard:

• Performance.
• Multiple targets (But I don't see how that is useful)
• Better typing that AS3
• Maybe better syntax.

Haxe is big enough that there should be more. What are the pros of Haxe?

Edit:
If there are no real disadvantages then why Haxe is not replacing AS3?