Canvas Canopy needs new zippers..

Hey all, the canvas canopy on my ute (now 10 years old) has finnaly let go. The Zipper has been pretty worn for a while, but now wont do up again. (keeps "self-unzipping") the actual canvas is still OK.

So,,, any suggestion of whether this can be repaired?? Im in outer north east burbs of Melbourne, (but happy to travel round melbourne of course!)

any recommendations on a "canvas canopy zipper replacement company" neer me would be awesome.

Thanks People, I love this site..

Dazz.