编辑：这是另一个问题：我无法Z-index使用 for 循环定义每张图片。
function placeImage(x) {
var div = document.getElementById("div_picture_right");
div.innerHTML = ""; // clear images
for (counter = 1; counter <= x; counter++ ) {
var image = document.createElement("img");
image.src = "borboleta/Borboleta" + counter + ".png";
image.width = "195";
image.height = "390";
image.alt = "borboleta" + counter;
image.id = "imagem" + counter;
image.position = "relative";
image.style.zIndex = counter;
div.appendChild(image);
}
};
window.onload = function () {
placeImage(20);
};
<body>
<div id="div_wrapper">
<div id="div_header">
<h1>First Project</h1>
</div> …