.wrapper a.obrazek {
    display:block;   
    background: url("http://lionardo.eu/x/x.png");
    background-repeat: no-repeat;
    width:170px;
    height:258px;
   }

.one:hover ~ a.obrazek {
    background: url("http://lionardo.eu/x/koszulka-biala.jpg ");
    background-repeat: no-repeat;
    width:170px;
    height:258px;
    display: block;
}

.two:hover ~ a.obrazek {
    background: url("http://lionardo.eu/x/yyy.png ");
    background-repeat: no-repeat;
    width:170px;
    height:258px;
    display: block;
}
.trzy:hover ~ a.obrazek {
    background: url("http://lionardo.eu/x/koszulka-czarna.jpg ");
    background-repeat: no-repeat;
    width:170px;
    height:258px;
    display: block;
}
.wrapper a.obrazek1 {
    display:block;   
    background: url("http://lionardo.eu/x/xx.png");
    background-repeat: no-repeat;
    width:170px;
    height:258px;
    
}
.one1:hover ~ a.obrazek1 {
    background: url("http://lionardo.eu/x/yyy.png ");
    background-repeat: no-repeat;
    width:170px;
    height:258px;
    display: block;
}

.two1:hover ~ a.obrazek1 {
    background: url("http://lionardo.eu/x/yyy.png ");
    background-repeat: no-repeat;
    width:170px;
    height:258px;
    display: block;
}
.trzy1:hover ~ a.obrazek1 {
    background: url("http://lionardo.eu/x/koszulka-czarna.jpg ");
    background-repeat: no-repeat;
    width:170px;
    height:258px;
    display: block;
}