Working with OG Groups

Hi ive been a big fan of this module for a couple of years now and ive farted about with it to great effect. Ive recently made my site Organic Groups driven and i'd like to use Prepopulate in my bookmarklet. My urls look like

Actually i see now it more of a problem with my bookmarklet code. og groups is just doing what your doing with its url

node/add/web2ob?gids[]=3816

part of the code where id like to have that looks like this-

/node/add/web2ob?edit[title]="+escape(t)+'&edit[body_field][body]='+esc

i was wanting to to include the

gids[]=3816

bit to it all. I dont know the syntax or even if it was possible. Does anyone know if it would be possible to add the og group url to my bookmarklet?

thanks