an skill icon database

i am making a program where GWbbcode goes in and BBcode goes out.
like this

the skill link is easy
http://wiki.guildwars.com/wiki/enter skill name here
but for skill icons that wont work :s
if you change wiki.guildwars.com/images/8/8a/Deadly_Paradox.jpg to wiki.guildwars.com/images/8/8a/shadow_form.jpg you get an nice 404 error.
so is there a database or so wich hosts all skills with an easy to use format, so by just changing the skill name in the url you get the good link?

Heres why it gets a 404 Error.

images/8/8a/Deadly_Paradox.jpg
images/e/e4/Shadow_Form.jpg

Difference in their directories.

And not too sure where there would be a good database. Did you try PvX wiki? Also keep in mind.. if you are making a program that always takes data from a website to build it in the program:

A.) If the website goes down your program becomes useless for the time being
B.) If they change the icon directories... your program will probably stop being able to build the icons when you request a skill until you fix them.

i know, its very annoyng
pvxwiki is not much better
http://images.wikia.com/pvx/img_skills/1767.jpg
a number per skill, and i dont want to list all skills + good link or number in my program :s

What's the suggestion here?