rem: totem->popup_timeout = g_timeout_add (FULLSCREEN_POPUP_TIMEOUT, (GSourceFunc) popup_hide, totem);
add: popup_timeout_add (totem);
context: on_mouse_click_fullscreen (GtkWidget *widget, Totem *totem){	popup_timeout_remove (totem);	totem->popup_timeout = g_timeout_add (FULLSCREEN_POPUP_TIMEOUT,		(GSourceFunc) popup_hide, totem);}