public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{

    new string[256];
    if(newkeys == 4 && IsPlayerInAnyVehicle(playerid))// odpalanie
    {
        TogglePlayerControllable(playerid, 1);
        new name[MAX_PLAYER_NAME];
        GetPlayerName(playerid,name, sizeof(name));
        format(string, sizeof(string), "%s Wklada kluczyk do stacyjki i odpala pojazd",name);
        SendClientMessage(playerid, -1, string);
    }
    if(newkeys == 16 && IsPlayerInAnyVehicle(playerid))//wysiadanie
    {
        TogglePlayerControllable(playerid, 1);
        RemovePlayerFromVehicle(playerid);
        new name[MAX_PLAYER_NAME];
        GetPlayerName(playerid,name, sizeof(name));
        format(string, sizeof(string), "%s Otwiera drzwi i opuszcza pojazd",name);
        SendClientMessage(playerid, -1, string);
    }
    if((newkeys==KEY_FIRE)&&(IsPlayerInAnyVehicle(playerid))&&(GetPlayerState(playerid)==PLAYER_STATE_DRIVER))
    {
        if (GetVehicleModel(GetPlayerVehicleID(playerid)) == 525)
        {
            new Float:pX,Float:pY,Float:pZ;
            GetPlayerPos(playerid,pX,pY,pZ);
            new Float:vX,Float:vY,Float:vZ;
            new Found=0;
            new vid=0;
            while((vid<MAX_VEHICLES)&&(!Found))
            {
                vid++;
                GetVehiclePos(vid,vX,vY,vZ);
                if ((floatabs(pX-vX)<7.0)&&(floatabs(pY-vY)<7.0)&&(floatabs(pZ-vZ)<7.0)&&(vid!=GetPlayerVehicleID(playerid)))
                {
                    Found=1;
                    if (IsTrailerAttachedToVehicle(GetPlayerVehicleID(playerid)))
                    {
                        DetachTrailerFromVehicle(GetPlayerVehicleID(playerid));
                    }
                    AttachTrailerToVehicle(vid,GetPlayerVehicleID(playerid));
                }
            }
        }
        if(newkeys==KEY_SPRINT && GetPlayerState(playerid) == PLAYER_STATE_ONFOOT)
        {
            ApplyAnimation(playerid,"PED","run_fatold",4.1,0,1,1,1,5);
        }
    }
    return 1;
}