+$It's not often that we get to see the original development work that went into advertising images used by world-famous brands. So it's a treat to see these preparatory sketches for a campaign commissioned by the open-source browser Firefox.
+$The illustrations were created by+$Martijn Rijven+$as part of a commission for Firefox by沃尔夫奥林斯+$. The browser wanted its campaign to be based around the idea of embodying human qualities such as simplicity and friendliness.
+$We love the playful and vibrant way the fox's tail mirrors the movement of the Firefox logo here.
+$Rijven produced a total of nine foxes as part of the commission. The initial designs were created using colour pencils before being rendered inAdobe Illustrator。
+$The mascot is part of Firefox’s attempts to expand its brand - it recently it announced that it would be releasing a Linux-based operating system for smartphones and tablet computers.
+$The first smartphones running the open source system are expected to be released by July 2013. The main benefit of the system is its ability to run entirely inHTML5+$, which means a large number of developers will be at Firefox’s disposal to work and improve the system further.