added a way to include any images displayed on the pages to the google site maps and updated the XSL to show them on the screen.

css/style.css

@@ -101,7 +101,6 @@ table.tablesorter thead tr .headerSortDown {
 table.tablesorter tbody td {
 	color: #005A92;
 	padding: 4px;
-
 	vertical-align: top;
 }
 table.tablesorter tbody tr{
@@ -124,6 +123,20 @@ table.tablesorter tbody tr:hover td,
 table.tablesorter tbody tr:hover a{
   color: #000;
 }
+table.imagestable,
+table.imagestable a {
+    font-size: 8pt;
+}
+table.imagestable {
+    margin-top: 15px;
+}
+table.imagestable tr.odd {
+    background: transparent;
+}
+table.imagestable tr.even {
+    background: transparent;
+}
+
 #Footer{
   margin: 50px 0 10px;
   text-align: right;

src/Extensions/GoogleSitemapSiteTreeExtension.php

@@ -2,6 +2,7 @@
 
 namespace Wilr\GoogleSitemaps\Extensions;
 
+use SilverStripe\Assets\Image;
 use SilverStripe\ErrorPage\ErrorPage;
 use SilverStripe\Forms\DropdownField;
 use SilverStripe\Forms\LiteralField;
@@ -138,4 +139,32 @@ class GoogleSitemapSiteTreeExtension extends GoogleSitemapExtension
             return (is_numeric($priority) && $priority <= 1.0) ? $priority : 0.5;
         }
     }
+
+    public function ImagesForSitemap()
+    {
+        $list = new ArrayList();
+
+        foreach ($this->owner->hasOne() as $field => $type) {
+            if(is_a(singleton($type), 'Image')) {
+                $image = $this->owner->getComponent($field);
+                if($image && $image->exists()) {
+                    $list->push($image);
+                }
+            }
+        }
+        foreach ($this->owner->hasMany() as $field => $type) {
+            if(is_a(singleton($type), 'Image')) {
+                $images = $this->owner->getComponents($field);
+                foreach ($images as $image) {
+                    if ($image && $image->exists()) {
+                        $list->push($image);
+                    }
+                }
+            }
+        }
+        
+        $this->owner->extend('updateImagesForSitemap', $list);
+        return $list;
+    }
+
 }

templates/Wilr/GoogleSitemaps/Control/GoogleSitemapController_sitemap.ss

@@ -1,12 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <?xml-stylesheet type='text/xsl' href='$StylesheetPath'?>
-<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
 	<% loop $Items %>
         <url>
             <loc>$AbsoluteLink</loc>
             <% if $LastEdited %><lastmod>$LastEdited.Rfc3339()</lastmod><% end_if %>
             <% if $ChangeFrequency %><changefreq>$ChangeFrequency</changefreq><% end_if %>
             <% if $GooglePriority %><priority>$GooglePriority</priority><% end_if %>
+            <% if $ImagesForSitemap %><% loop $ImagesForSitemap %>
+                <image:image>
+                    <image:loc>{$AbsoluteLink}</image:loc>
+                </image:image>
+            <% end_loop %><% end_if %>
         </url>
 	<% end_loop %>
 </urlset>

xsl/xml-sitemap.xsl

@@ -37,9 +37,36 @@
                     <xsl:variable name="itemURL">
                       <xsl:value-of select="sitemap:loc"/>
                     </xsl:variable>
+                    <xsl:variable name="imagesCount" select="count(image:image)"/>
                     <a href="{$itemURL}">
                       <xsl:value-of select="sitemap:loc"/>
                     </a>
+
+
+                    <xsl:if test="$imagesCount &gt; 0">
+                      <table class="imagestable" cellpadding="0" cellspacing="0">
+                        <tr>
+                          <th>Images</th>
+                        </tr>
+                        <xsl:for-each select="image:image">
+                          <xsl:variable name="imageURL">
+                            <xsl:value-of select="image:loc"/>
+                          </xsl:variable>
+                          <tr>
+                            <td>
+                              <img src="{$imageURL}" width="40px"/>
+                            </td>
+                            <td>
+                              <a href="{$imageURL}">
+                                <xsl:value-of select="image:loc"/>
+                              </a>
+                            </td>
+                          </tr>
+                        </xsl:for-each>
+                      </table>
+                    </xsl:if>
+
+
                   </td>
                   <td>
                     <xsl:value-of select="concat(sitemap:priority*100,'%')"/>