While Oxford Dictionary of English does not have definition of rollover, Wiktionary defines this word as "a graphic element that changes its shape or colour when the cursor moves over it"; in other terms, when we roll the trackball of a mouse over this element without having to click.
Also, it is common to use rollover as adjective and as verb, at least on internet.
Is this usage of rollover acceptable nowadays?
Since most people use now either optical mice or trackpads, has the term rollover become technically obsolete? If so, is there a better word?