How to order bus schedules from and to a specific city?

When I open this page I want to show only the image of the bus lines (for example “Eurobus” image and “17” image or only “82” image. When the user click on the image, it download the PDF. But for example if I choose from Angri (Partenza Angri) and to Fisciano (arrivo Fisciano), I want to show only the bus lines from Angri to Fisciano. Sorry for my english