Previously, when I went to a web site, there were boxes above my address bar that listed the site I was visiting and "ALL" of the previous sites (history) I had visited and also had a drop down half picture of the web page when I rolled my cursor over the box. Sometimes there would be six or seven boxes displayed which showed a half picture of each web page and allowed me to click on either box and return to that particular site. These boxes are no longer there. Usually only one box remains after I move to a different site...and that is the current site I am viewing and there is no drop down picture. How can I get this feature back? I think it started when I upgraded to Firefox 7 (I think).