accept="image/png, image/jpg" has no effect on <s:fileUploa

[gemel]

Im using seam 2.0.0
I have a <s:fileUpload> and my application should accept only "image/png, image/jpg" files.
I used the <s:fileUpload> like this

<s:fileUpload accept="image/png, image/jpg" data="#{TPZBackgroundUploadAction.byteArray}" fileName="#{TPZBackgroundUploadAction.fileName}"/>

But when the component is diplayed, I can see all files not only "image/png, image/jpg".

What am I doing wrong?
Thanks for help!

[shane.bryzak]

I don't know of any browser that honours the accept attribute.