void main()
{
    // Get the creature who triggered this event.
    object oPC = GetLastOpenedBy();

    // Only fire once.
    if ( GetLocalInt(GetModule(), "DO_ONCE__" + GetTag(OBJECT_SELF)) )
        return;
    SetLocalInt(GetModule(), "DO_ONCE__" + GetTag(OBJECT_SELF), TRUE);

    // Destroy objects (not fully effective until this script ends).
    DestroyObject(GetObjectByTag("Fissif_1"));
    DestroyObject(GetObjectByTag("Fissif"));
    DestroyObject(GetObjectByTag("Fissif1"));
    DestroyObject(GetObjectByTag("Lankhguard70"));
}