var imgArr = new Array('photo01', 'photo02', 'photo03', 'photo04', 'photo05', 'photo06', 'photo07');
var i = 0;
var wait = 5000;

function top_slideshow() {
Effect.Fade(imgArr[i], { duration:3, from:1.0, to:0.0 });
i++;
if (i == 7) i = 0;
Effect.Appear(imgArr[i], { duration:3, from:0.0, to:1.0 });
}

function startPage() {
create("02");
create("03");
create("04");
create("05");
create("06");
create("07");
setInterval('top_slideshow()',wait);
}

function create(num) {
var imgObj = document.createElement("img");
imgObj.src = "images/top_image/"+num+".jpg";
imgObj.id = "photo"+num;
imgObj.style.display = "none";
var divObj = document.getElementById("main-theme");
divObj.appendChild(imgObj);
}