i broke my vauxhall key

is there any tutorials around that i can follow to open the key up? because i cant do it! the spring mechanism has broke i think.. so the button doesnt flip the key open and it doesnt stay closed.. so it gets really annpying when its in my pockets...

its 1 of these btw

http://media.photobucket.com/image/v...Image009-1.jpg

thank youu