<% Global.image %>
macro renders an image out of image-pool either as plain image, thumbnail, popup or url param.name can contain a slash indicating that the image belongs to a different site or to root

Sourcecode in Global/macros.js:
1:   function image_macro(param) {
2:      if (!param.name)
3:         return;
4:      if (param.name.startsWith("/")) {
5:         // standard images and logos are handled by constant IMAGES
6:         DefaultImages.render(param.name.substring(1), param);
7:         return;
8:      }
9:      var result = getPoolObj(param.name, "images");
10:     if (!result && param.fallback)
11:        result = getPoolObj(param.fallback, "images");
12:     if (!result)
13:        return;
14:     var img = result.obj;
15:     // return different display according to param.as
16:     switch (param.as) {
17:        case "url" :
18:           return img.getUrl();
19:        case "thumbnail" :
20:           if (!param.linkto)
21:              param.linkto = img.getUrl();
22:           if (img.thumbnail)
23:              img = img.thumbnail;
24:           break;
25:        case "popup" :
26:           param.linkto = img.getUrl();
27:           param.onClick = img.getPopupUrl();
28:           if (img.thumbnail)
29:              img = img.thumbnail;
30:           break;
31:     }
32:     delete(param.name);
33:     delete(param.as);
34:     // render image tag
35:     if (param.linkto) {
36:        Html.openLink({href: param.linkto});
37:        delete(param.linkto);
38:        renderImage(img, param);
39:        Html.closeLink();
40:     } else
41:        renderImage(img, param);
42:     return;
43:  }