--- apps/plugins/viewer.c	2006-11-20 08:01:18.000000000 +0300
+++ apps/plugins/viewer.c	2007-01-07 22:31:27.796875000 +0300
@@ -125,6 +125,8 @@
 #define VIEWER_LINE_DOWN (BUTTON_ON | BUTTON_DOWN)
 #define VIEWER_COLUMN_LEFT (BUTTON_ON | BUTTON_LEFT)
 #define VIEWER_COLUMN_RIGHT (BUTTON_ON | BUTTON_RIGHT)
+#define VIEWER_PREV (BUTTON_ON | BUTTON_OFF)
+#define VIEWER_NEXT (BUTTON_ON | BUTTON_SELECT)
 
 #define VIEWER_RC_QUIT BUTTON_RC_STOP

@@ -1419,6 +1421,29 @@ 
                 break;
 
             case VIEWER_SCREEN_LEFT:
+		if (prefs.view_mode == WIDE) {
+                    /* Screen left */
+                    col -= draw_columns/glyph_width('o');
+                    col = col_limit(col);
+		}
+	        else {   if (prefs.scroll_mode == PAGE)
+                         {
+                             /* Page up */
+#ifdef HAVE_LCD_BITMAP
+                             for (i = prefs.page_mode==OVERLAP? 1:0; i < display_lines; i++)
+#else
+                             for (i = 0; i < display_lines; i++)
+#endif
+                                 viewer_scroll_up();
+                         }
+                         else
+                             viewer_scroll_up();
+                         old_tick = *rb->current_tick;
+	        }
+			
+		viewer_draw(col);
+		break;
+
             case VIEWER_SCREEN_LEFT | BUTTON_REPEAT:
                 if (prefs.view_mode == WIDE) {
                     /* Screen left */
@@ -1434,6 +1459,25 @@
                 break;
 
             case VIEWER_SCREEN_RIGHT:
+		if (prefs.view_mode == WIDE) {
+                    /* Screen right */
+                    col += draw_columns/glyph_width('o');
+                    col = col_limit(col);
+		}
+		else {   if (prefs.scroll_mode == PAGE)
+                         { 
+                             /* Page down */
+                             if (next_screen_ptr != NULL)
+                                 screen_top_ptr = next_screen_to_draw_ptr;
+                         }
+                        else
+                            viewer_scroll_down();
+                        old_tick = *rb->current_tick;
+                }
+			
+		viewer_draw(col);
+		break;
+
             case VIEWER_SCREEN_RIGHT | BUTTON_REPEAT:
                 if (prefs.view_mode == WIDE) {
                     /* Screen right */
@@ -1488,6 +1532,21 @@
                 break;
 #endif
 
+#ifdef VIEWER_NEXT		
+            case VIEWER_NEXT:
+            case VIEWER_NEXT | BUTTON_REPEAT:
+		rb->audio_next();
+		break;
+		
+#endif
+#ifdef VIEWER_PREV		
+            case VIEWER_PREV:
+            case VIEWER_PREV | BUTTON_REPEAT:
+		rb->audio_prev();
+		break;
+		
+#endif
+
 #ifdef VIEWER_RC_QUIT
             case VIEWER_RC_QUIT:
 #endif