trend find macd

/*****************************************
  KH_MACD
  created by KelvinHand in 2012 Oct 6th
  MACD Option:
   * Classic 2 lines
   * MT4 Style


*****************************************/
_SECTION_BEGIN("KH_MACD");
SetChartBkGradientFill( ParamColor("BgTop", colorBlack),ParamColor("BgBottom", colorBlack), colorBlack);

iOpt = ParamList("MACD Option", "Classic|MT4", 1);

cMACD = ParamColor("MACD Color",  colorWhite);
cSig=ParamColor("Signal color", colorRed );



fastEMA = Param( "Fast EMA", 12, 1, 200, 1 );
slowEMA = Param( "Slow EMA", 26, 1, 200, 1 );
SigSMA = Param( "MACD SMA", 9, 1, 200, 1 );

iMACD=EMA(C, fastEMA) - EMA(C,slowEMA);
iSignal=MA(iMACD,SigSMA);

Plot( iSignal, "", cSig, styleThick|styleNoLabel);


_N(Title = StrFormat("MACD(%g, %g, %g) %g, %g", fastEMA, slowEMA,	SigSMA, iMacd, iSignal));


switch (iOpt)
{
   case "MT4":
        Plot( iMACD, "", cMACD, styleThick|styleHistogram|styleNoLabel);
        break;

   default:
        Plot( iMACD, "", cMACD, styleThick|styleNoLabel);
        break;

}

Plot( 0, "", colorGrey40, styleNoLabel);