1. An interactive vehicular mirror system comprising: an interior rearview mirror assembly having a mirror casing and a reflective element, said mirror assembly being adapted to mount at an interior portion of the vehicle, and said reflective element having a rearward field of view when said interior mirror assembly is mounted in a vehicle; a display element provided at said interior mirror assembly; and a user actuatable selector element associated with a function and provided at said reflective element, said selector element actuating said display element to display an image associated with said function when said selector element is actuated.