I received an email from my power supplier,in it I must click on bill to view,it downloads and asks if I want to open it with internet explorer or something else,so I click on firefox.All it does is keeps opening loads and loads of tabs across the top,I've tried to close them at the last count I had managed to close over 1000 tabs but still cannot see my bill.my wife had the same she tried to open pdfs and got the same problem.So how can we view without problems files we receive in emails etc,and how do I get rid off this tab multipling itself? Thanks