[Clipart] some OCAL SVG is rendered off screen

[Ruud Steltenpool, http://svg.startpagina.nl]

http://www.openclipart.org/clipart/electronics/bulb/light_bulb_karl_bartel_01.svg 
is the 'best' example i've seen so far of openclipart with the viewBox 
not set or set inaccurately. The actual image is rendered off-screen and 
there's no scrollbar or something indicating that. There's also quite 
some ocal content that partly falls of the screen.

This can be improved