@media screen and (max-width: 950px) and (min-width: 750px) {
    #itemcontainer {
         zoom: 0.5;
         /*-moz-transform: scale(0.25);*/
    }
}

@media screen and (max-width: 750px) {
    #itemcontainer {
         zoom: 0.25;
         /*-moz-transform: scale(0.25);*/
    }
}