I am trying to change our logo in a specific place on our main page for CERN openlab ( http://openlab.cern/ ) and I cannot do it. On the main page, under latest news, next to each article's teaser, our logo appears. Monday the 19th we will start using our new logo. As a result I need to replace that (I suppose that I replace it somewhere once and then it is automatically changed in all articles). Can you please instruct me on how to do that?
Thanks in advance,