Adverts appearing on this blog without my permission

Apologies for the adverts that are appearing at the top of  my blog. This is happening without my consent.  If they continue I may migrate my blog to Wordpress, but want to avoid that, please bear with this situation if it annoys you.

Just checked this out on my phone, it appears to be adware on the laptop.  Will try to sort this out with spybot or the like.  Beware of flash video games, my wife plays.