+ var preload = document.getElementById("preload");
+ var dpr = find_dpr();
+ var img;
+ // See if we have a preload going on that we can reuse.
+ if (element_id == "image" && preload !== null && preload.src == url) {
+ rename_element("preload_box", "image_box");
+ img = rename_element("preload", "image");
+ } else {
+ img = replace_image_element(url, element_id, main);
+ }