You did not say which browser you are using but try this. Click on tools then add-ons or maybe manage add-ons. This should display which add-ons you are running for your browser. You should then be able to highlight each add-on and disable it to determine which one is giving you the problem. After you figure out which add-on is the problem remove and reload it.
Brian, Loretta & Daisy (Golden Retriever)
2008 Holiday Rambler Endeavor 40 PDQ , ISL 400
2014 Ford Explorer toad