#property indicator_chart_window
#property indicator_buffers 4
#property indicator_color1 DodgerBlue
#property indicator_color2 HotPink
#property indicator_color3 Blue
#property indicator_color4 Red

double BufMA01[];
double BufMA02[];
double BufBuy[];
double BufSell[];

extern int MA01_Period = 20;
extern int MA02_Period = 100;

int init()
{
	SetIndexBuffer(0,BufMA01);
	SetIndexBuffer(1,BufMA02);
	SetIndexBuffer(2,BufBuy);
	SetIndexBuffer(3,BufSell);
	

	SetIndexStyle(2,DRAW_ARROW,STYLE_SOLID,5,Blue);
	SetIndexArrow(2,233);

	SetIndexStyle(3,DRAW_ARROW,STYLE_SOLID,5,Red);
	SetIndexArrow(3,234);

	return(0);
}

int start()
{
	int counted_bar = IndicatorCounted();
	int limit = Bars-counted_bar;

	if(counted_bar == 0) limit -= MA02_Period-1;
	for (int i = limit-1; i>=0; i--)
	{
		BufMA01[i] = iMA(NULL,0,MA01_Period,0,MODE_EMA,PRICE_CLOSE,i);
		BufMA02[i] = iMA(NULL,0,MA02_Period,0,MODE_EMA,PRICE_CLOSE,i);
	}

	if(counted_bar == 0) limit -= 2;
	for (i = limit-1; i>=0; i--)
	{
		BufBuy[i] = EMPTY_VALUE;
		if(BufMA01[i+2] <= BufMA02[i+2] && BufMA01[i+1] > BufMA02[i+1])
			BufBuy[i] = Low[i]-10*Point;

		BufSell[i] = EMPTY_VALUE;
		if(BufMA01[i+2] >= BufMA02[i+2] && BufMA01[i+1] < BufMA02[i+1])
			BufSell[i] = High[i]+10*Point;
	}
	return(0);
}