http://movoda.net/api/historygraph.png?player=4438&skill=1&out=raw
skill = sk1,sk2,sk3,skx
0 = Character
1 = Speed
2 = Mining
3 = Combat
4 = Magic
5 = Trading
6 = Woodcutting
7 = Smithing
8 = Construction
9 = Cooking
10 = Fishing
11 = Crafting
12 = Harvesting
guild = Guilds by Exp
all = All skills for one person, if more than one person are chosen only the first counts