Display issues IE vs FF

[dogpile]

Hi

Hoping someone can give me a pointer to a small problem I'm having:

Trying to achieve rounded corner buttons for a tags on a website using CSS and a nested <span tag.

Relevant example page is at:
http://www.mytophost.co.uk/test/test.html

Styles are in the test.html page and the images used are at:
http://www.mytophost.co.uk/test/button.gif
http://www.mytophost.co.uk/test/buttonh.gif
http://www.mytophost.co.uk/test/end.gif
http://www.mytophost.co.uk/test/endh.gif

All looks fine for me in IE, but bg images align differently in FF.

I realise it's probably something in my CSS that's not compliant and so that's why IE works and FF not ...

Any help greatly appreciated.

[boogyman]

I do not see any problem..

[mburt]

I've got to say that pissa is right. I don't see any problem either in FF.