Arbitraz_v1

//+------------------------------------------------------------------+
//|                                                                  |
//|                 Copyright © 2000-2007, MetaQuotes Software Corp. |
//|                                         http://www.metaquotes.ru |
//+------------------------------------------------------------------+
#property indicator_chart_window
#property indicator_buffers  1
#property indicator_color1 Red
double ExtMapBuffer1[];
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int init()
  {
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,ExtMapBuffer1);
   return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int start()
  {
   int cnt;
     for(cnt=0;cnt<=iBars(NULL,0); cnt++) {
      ExtMapBuffer1[cnt]=iClose( "GBPUSD", 0, cnt)*iClose( "EURGBP", 0, cnt);
     }//for 
   ExtMapBuffer1[0]=MarketInfo( "GBPUSD", MODE_BID)*MarketInfo( "EURGBP", MODE_BID);
   return(0);
  }
//+------------------------------------------------------------------+