+extern Window net_sel_win;
+extern Systraybar systray;
+extern int refresh_systray;
+
+
+void init_systray();
+void init_systray_panel(void *p);
+void cleanup_systray();
+void draw_systray(void *obj, cairo_t *c, int active);
+void resize_systray(void *obj);
+
+
+// systray protocol
+// many tray icon doesn't manage stop/restart of the systray manager
+int init_net();
+void cleanup_net();
+void net_message(XClientMessageEvent *e);