[xwiki-users] Changing the link behind the logo

Hi all, I uploaded my own logo.png in the header of my wiki, works great. Now I would like to change the link behind the logo, I want that it always points to the Webhome of the space the user is in, and I dont know how to do this. I allready changed some things in the global.vm of the skin, I can feel that I am almost there... But I need the code snippet for pointing towards the Webhome in the Space the user is in. Any help is greatly appreciated. -Wouter