Please note that reading directly on Firefox is good for pamphlets and short books, but for novels, you should install the ePub reader that best suits your needs. For more infos and to install EPUBReader Add-on, visit the following link: EPUBReader will download the file and make some processing to display the ePub file ready to read.
If your browser is Mozilla Firefox, you can install an Add-on called EPUBReader, and you will not see the save dialog box. When you click on an epub file on the internet, you will be asked to save it on your computer or simply chose to open the file with your favorite eBook reader.
