Internet explorer 9/multiple mail attachments/owa

Hi guys,

I've a question about adding multiple attachments in owa via internet explorer 9. I can properly attach file in ie10. But in ie9 it doest allow me to attach multiple file. In internet explorer 10, when i set browser and document mode to ie9, i also can not add multiple attachment. Is there any fix for ie9. We cant use ie10 because our some local programs are not compitable with ie10.