Index: gmap.module
===================================================================
--- gmap.module	(revision 263)
+++ gmap.module	(working copy)
@@ -1231,3 +1231,58 @@
   $output .= gmap_draw_map($thismap);
   return $output;
 }
+
+/**
+ * Implementation of hook_block()
+ */
+function gmap_block($op = 'list', $delta = 0, $edit = array()) { 
+  if ($op == 'list') { 
+    $blocks[0] = array('info' => t('Map legend block'), 
+      'weight' => 0, 'enabled' => 0, 'region' => 'right');
+    return $blocks; 
+  } 
+  else if ($op == 'configure' && $delta == 0) { 
+
+  } 
+  else if ($op == 'save' && $delta == 0) { 
+
+  } 
+  else if ($op == 'view') { 
+    switch($delta) { 
+      case 0: 
+        $block = array('subject' => t('Map legend'), 
+          'content' => gmap_block_legend()); 
+        break; 
+    } 
+    return $block; 
+  } 
+} 
+
+/**
+ * Generate a legend based on the different markers shown on the created map
+ */
+function gmap_block_legend() {
+  $ntypes=node_get_types();
+  foreach ($ntypes as $key => $value) {
+    if (variable_get('location_'. $key, 0)) {
+      if ($icon = variable_get('gmap_node_marker_'.$key, NULL)) {
+        $legend[] = array('type' => $value, 'markername' => $icon);
+      }
+    }
+  }
+  return theme('gmap_legend',$legend);
+}
+
+/**
+ * Theme the legend
+ */
+function theme_gmap_legend($legend) {
+  global $base_url;
+  foreach ($legend as $item) {
+    if (file_exists(variable_get('gmap_markerfiles',drupal_get_path('module', 'gmap') .'/markers').'/'.$item['markername'].'.png')) {
+      $marker=$base_url.'/'.variable_get('gmap_markerfiles',drupal_get_path('module', 'gmap') .'/markers').'/'.$item['markername'].'.png';
+    }
+    $items[] = '<div class="gmap-legend-icon"><img src="'.$marker.'" alt="'.$item['type'].'"/></div> <div class="gmap-legend-type">'.$item['type'].'</div>';
+  }
+  return theme('item_list',$items);
+}
\ No newline at end of file
Index: gmap.css
===================================================================
--- gmap.css	(revision 263)
+++ gmap.css	(working copy)
@@ -11,3 +11,11 @@
    margin: 0;
    border: solid black 1px;
 }
+
+.gmap-legend-icon {
+  display: inline;
+}
+
+.gmap-legend-type {
+  display: inline;
+}
\ No newline at end of file