TabSlideshow.js

document.getElementsById("one").style.display = "block";
document.getElementsById("two").style.display = "none"
function slide(id) {
    var slide1, slide2;
    slide1 = document.getElementsById("one");
    slide2 = document.getElementsById("two");
    if (id = 1) {
    slide2.style.display = "none";
    slide1.style.display = "block";
    } else {
        slide1.style.display = "none";
        slide2.style.display = "block";
    }
}