/*********************************************************
Alexis C. Montenegro © June 2005                          
Use and/or modify this code freely. If you redistribute it
please include this and/or any other comment blocks and a 
description of any changes you make.                      
**********************************************************/

var fpArray = new Array();

function preMain() {
    setPriceStudy(true);
    setStudyTitle("HiLo_firstXminutes");
    setCursorLabelName("High", 0);
    setCursorLabelName("Low", 1);
    setPlotType(PLOTTYPE_FLATLINES,0);
    setPlotType(PLOTTYPE_FLATLINES,1);
    setDefaultBarFgColor(Color.blue,0);
    setDefaultBarFgColor(Color.red,1);
    var x=0;
    fpArray[x] = new FunctionParameter("xStart", FunctionParameter.NUMBER);
	with(fpArray[x++]){
        setName("Start Time");
        setLowerLimit(0);		
        setDefault(930);
    }
    fpArray[x] = new FunctionParameter("xEnd", FunctionParameter.NUMBER);
	with(fpArray[x++]){
        setName("End Time");
        setLowerLimit(0);		
        setDefault(1030);
    }
    fpArray[x] = new FunctionParameter("xInterval", FunctionParameter.NUMBER);
	with(fpArray[x++]){
        setName("Ext Interval Used");
        setLowerLimit(1);		
        setDefault(5);
    }
    fpArray[x] = new FunctionParameter("xDisplay", FunctionParameter.STRING);
	with(fpArray[x++]){
        setName("Display");
        addOption("Show");
        addOption("Hide");
        setDefault("Show");
    }
}

var bInit = false;
var xRange = null;
var xRangeH = null;
var xRangeL = null;

function main(xStart,xEnd,xInterval,xDisplay) {
    if(bInit==false){
        xRange = efsInternal("calcOR",xStart,xEnd,xDisplay,inv(xInterval));
        xRangeH = getSeries(xRange,0)
        xRangeL = getSeries(xRange,1)
        bInit=true;
    }
    return new Array(xRangeH,xRangeL);
}

var vFlag = true;
var vFlag2 = true
var vHigh = null;
var vLow = null;
var vClose = null;
var vDay1 = null;
var vDay2 = null;

function calcOR(start,end,display,source){
    if (getBarState() == BARSTATE_NEWBAR) {
        if (vDay1 == null) {
            vDay2 = getDay(0);
        } else {
            vDay2 = vDay1;
        }
        vDay1 = getDay(0);
        if (vDay1 != vDay2) {
            vHigh = null;
            vLow = null;
            vFlag = true;
            vFlag2 = false;
        }
        var vHour1 = (getHour()*100)+getMinute();
        if(vHour1 >= start){
            vFlag2=true;
        }
        var vHour = (getHour()*100)+getMinute();
        if (vHour >= end) {
            vFlag = false;
            vFlag2=false;
        }
    }
    if (vFlag == true&&vFlag2==true) {
        if (vHigh == null) {
            vHigh = high(0);
        }
        if (vLow == null) {
            vLow = low(0);
        }
        vHigh = Math.max(high(0), vHigh);
        vLow = Math.min(low(0), vLow);
    }
    if(display=="Hide"){
        if(vFlag==false&&vHigh!=null&&vLow!=null){
            var vHigh2 = vHigh;
            var vLow2 = vLow;
        }
    }else if(display=="Show"){
        var vHigh2 = vHigh;
        var vLow2 = vLow;
    }
    return new Array(vHigh2,vLow2);
}