I've built up an extensive library of very important bookmarks in firefox. Last week, I needed to clean my computer and deleted not the bookmarks, but the "downloads" folder of random PDF's and other documents. Now, my bookmarks are all gone and I've taken all the mozilla steps to recover them to no success. I can't even find any browsing history to revisit the sites and create a new bookmark list. Is there a way to access my previous history and bookmarks?