string lastAnim;

default
{
    on_rez(integer start)
    {
        llResetScript();
    }

    state_entry()
    {
        llRequestPermissions(llGetOwner(), PERMISSION_TRIGGER_ANIMATION);
    }

    run_time_permissions(integer perm)
    {
        if(perm & PERMISSION_TRIGGER_ANIMATION)
        {
            state AO;
        }
    }
}

state AO
{
    on_rez(integer start)
    {
        llResetScript();
    }

    state_entry()
    {
        list anims = llGetAnimationList(llGetOwner());
        integer i;
        for (i=0; i<llGetListLength(anims); i++)
        {
            llStopAnimation(llList2String(anims,i));
        }
    llMonitorAnimationState(llGetOwner()); // Starts animation_state() callback function on animation state changes on llGetOwner()
    }

    animation_state(key id, string anim)
    {
    llStartAnimation(anim);
    llStopAnimation(lastAnim);
    lastAnim = anim;
    }
}