Internet Explorer Javascript图像问题

function showPic(whichpic) {
    if (!document.getElementById("placeholder")) return true;
    var source = whichpic.getAttribute("href");
    var placeholder = document.getElementById("placeholder");
    placeholder.setAttribute("src",source);
    if (!document.getElementById("description")) return false;
    var text = whichpic.getAttribute("title") ? whichpic.getAttribute("title") : "";
    var description = document.getElementById("description");
    if (description.firstChild.nodeType == 3) {
        description.firstChild.nodeValue = text;
    }
    return false;
}

我的占位符是使用 createElement("img") 但是,当我单击缩略图时,图像会压缩到它所替换的占位符的大小。

function preparePlaceholder() {
    if(!document.createElement) return false;
    if(!document.createTextNode) return false;
    if(!document.getElementById) return false;
    if(!document.getElementById("imagegallery")) return false;
    var placeholder = document.createElement("img");
    placeholder.setAttribute("id","placeholder");
    placeholder.setAttribute("src","images/placeholder.gif");
    placeholder.setAttribute("alt","Gallery Placeholder");
    var description = document.createElement("p");
    description.setAttribute("id","description");
    var desctext = document.createTextNode("Choose an image");
    description.appendChild(desctext);
    var gallery = document.getElementById("imagegallery");
    insertAfter(placeholder,gallery);
    insertAfter(description,placeholder);
}

因此,如下图所示的结果是一个倾斜的图像:

http://anarchist.webuda.com/

此处为Javascript: http://pastebin.com/kaAhjdqk 此处为HTML: http://pastebin.com/Dm5p2Dj6 http://pastebin.com/yiVPiQZe