This has happened on my 2 laptops with one particular website. Firefox is updated as required.... It has worked before. On the Norwegian ( NCL ) website , if you go to the " excursion " link , pick a port , you see the 1st available tours...at the bottom of the page stating " 1-12 of 24 NEXT." However when you click the " highlighted" NEXT , nothing happens.....I have tried every combinations of settings....This feature, however works on my other browser with No additional settings....I was Always able to accomplish this.