Catdog

http://stackoverflow.com/questions/27192353/css-how-to-do-image-change-on-rollover

by chepe263

HTML

<a href="#" id="cambio">
    <input type="button" id="dog" value="Perro" />
    <input type="button" id="cat" value="Gato" />
</a>

CSS

#dog{
    display: none;
    }
#cambio:hover > #cat{
    display: none;
}

#cambio:hover > #dog{
    display:block;
    
}