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- function insertAfter(newElement, targetElement) {
- var parent = targetElement.parentNode;
- if (parent.lastChild == targetElement) {
- parent.appendChild(newElement);
- } else {
- parent.insertBefore(newElement,targetElement.nextSibling);
- }
- }
- 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;
- }
- function prepareGallery() {
- if (!document.getElementsByTagName) return false;
- if (!document.getElementById) return false;
- if (!document.getElementById("imagegallery")) return false;
- var gallery = document.getElementById("imagegallery");
- var links = gallery.getElementsByTagName("a");
- for ( var i=0; i < links.length; i++) {
- links[i].onclick = function() {
- return showPic(this);
- }
- links[i].onkeypress = links[i].onclick;
- }
- }
- 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);
- }
- function img_create(src, alt, title) {
- var img= IEWIN? new Image() : document.createElement('img');
- img.src= src;
- if (alt!=null) img.alt= alt;
- if (title!=null) img.title= title;
- return img;
- }
- function addLoadEvent(func) {
- var oldonload = window.onload;
- if (typeof window.onload != 'function') {
- window.onload = func;
- } else {
- window.onload = function() {
- oldonload();
- func();
- }
- }
- }
- addLoadEvent(preparePlaceholder);
- addLoadEvent(prepareGallery);
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