Simple Firefox plugin

I want a firefox plugin that simply open 4 tabs in firefox and in each tab it will load a specpfic url. I another 4 tabs - and in these 4 otehr tabs - then it also loads urls and show them as a 9 large thumbnails. App also have a search field so can search for other domains in the input data (sqlite database). Also, plugin needs to have ability to get input from a text file. The text file only contains in which order that the domain urls gets loaded into into the browser (so that UTF-8 text input file file has a url string/part of url and then that string is being matched to the database and that again determines which info to load into the 4 tabs. plugin must also have buttons: Previous | Next Search ___________________ In addition then it msut be userdefined from 1-0 of how many of the urls from the texdt file that plugin has to "trigger" in the database and thereby makign firefox start downlaoding and caching those 4 sets of data per each of the 1-9 domains that plugin pre-loads into cache.