Change the "select files" text in the File Upload box (Gravity Forms)

Hello,

I was wondering, if it was possible to change the text in the button in the file upload section in my Gravity Forms? It says by default “Select Files” where I want it to say: “vedhæft filer” – just a translation to danish. ;)
I dont seem to be able to change it manually in the Gravity Forms adminitration in WP.

Its the blue button saying select files in the sidebar down at the bottom: http://dlcs.dk/graffitirens/