Code:
//plg te muta in viata..

#include < amxmodx >
#include < cstrike >

#pragma tabsize 0

#define PLUGIN "CS16 Ballancer"
#define VERSION "0.1"
#define AUTHOR "aNNakin"

new gi_MaxPlayers;

new const gs_Teams[ ][ ] =
{
   "TERRORIST",
   "CT"
};

// - - - - - - - - -
#define   INTERVAL 30   /* din cate in cate secunde se vor verifica echipele */
const i_Immunity = 0;   /* 1 = adminii au imunitate, 0 adminii nu au imunitate */
// - - - - - - - - -

public plugin_init ( )
{
   register_plugin ( PLUGIN, VERSION, AUTHOR );
   gi_MaxPlayers = get_maxplayers ( );
   set_task ( float ( INTERVAL ), "CheckTeams", _, _, _, "b" );
}

public CheckTeams ( )
{
   new i_TsNum = get_team_num ( 1 );
   new i_CTsNum = get_team_num ( 2 );
   
   while ( ( i_TsNum - i_CTsNum ) > 1 )
   {
      i_TsNum--; ++i_CTsNum;
      transfer_user ( 1, 2 );
   }
   
   while ( ( i_TsNum - i_CTsNum ) < -1 )
   {
      i_TsNum++; --i_CTsNum;
      transfer_user ( 2, 1 );
   }
      
}

stock get_team_num ( i_Team )
{
   new i_Count, i_Index;
   
   for ( i_Index = 1; i_Index <= gi_MaxPlayers; i_Index++ )
      if ( get_user_team ( i_Index ) == i_Team )
         i_Count++;
         
   return i_Count;
}

stock transfer_user ( i_From, i_To )
{
   new i_Players[ 32 ], i_Num;
   get_players ( i_Players, i_Num, "ae", gs_Teams[ ( i_From - 1 ) ] )
   
   ChoosePlayer:
   new i_Player = i_Players[ random_num ( 0, i_Num-1 ) ];
   
   if ( ! is_user_alive ( i_Player ) || ( i_Immunity && get_user_flags ( i_Player ) & ADMIN_IMMUNITY ) )
      goto ChoosePlayer;
   
   switch ( i_To )
   {
      case 1: cs_set_user_team ( i_Player, CS_TEAM_T );
      case 2: cs_set_user_team ( i_Player, CS_TEAM_CT );
   }

   cs_reset_user_model(i_Player)
   
   client_print ( i_Player, print_chat, "Ai fost transferat la cealalalta echipa pentru a echilibra jocul." );
}