// global vars
var index = indices.split(",");
var Ric = Rics.split(",");
var imageparams = 'image_type=gif&image_width=' + img_x + '&image_height=' + img_y;
NewImage = new Image(img_x,img_y);
var symbol_color_list 	= '';
var today = getToday();
var currdate = getcurrdate();
var date_1M = date_before(31);
var date_3M = date_before(93);
var date_6M = date_before(186);
var date_1Y = date_before(365);
var date_3Y = date_before(1095);
var date_5Y = date_before(1825);

function y2k(number) { 

	return (number < 1000) ? number + 1900 : number; 

} // end of y2k


function isDate (day,month,year) {

    var test = new Date(year,month,day);
        
    if ( (y2k(test.getYear()) == year) &&
         (month == test.getMonth()) &&
         (day == test.getDate()) ) {
        return true;
    } else {
        return false
        }

} // end of isDate


function getToday () {
	var date = new Date();
	var d  = date.getDate();
	var day = (d < 10) ? '0' + d : d;
	var m = date.getMonth() + 1;
	var month = (m < 10) ? '0' + m : m;
	var yy = date.getYear();
	var year = (yy < 1000) ? yy + 1900 : yy;

	return year + '' + month + '' + day;

} // end of get Today 

function getcurrdate () {
	var date = new Date();
	var d  = date.getDate();
	var day = (d < 10) ? '0' + d : d;
	var m = date.getMonth() + 1;
	var month = (m < 10) ? '0' + m : m;
	var yy = date.getYear();
	var year = (yy < 1000) ? yy + 1900 : yy;

	return year + '-' + month + '-' + day;

} // end of currdate


function date_before(difference) { // difference in days
        // sdate = today, variables are from the init part
        var sdate = new Date(today.substr(0,4), today.substr(4,2)-1, today.substr(6,2)); 
        // figure out day, month, year of the difference ago
        var odate = new Date(sdate.getTime() - (difference * 86400000));
        // greates the return string
        var dd  = odate.getDate();
        var day1 = (dd < 10) ? '0' + dd : dd;
        var mm = odate.getMonth() + 1;
        var month1 = (mm < 10) ? '0' + mm : mm;
        var yyyy = odate.getYear();
        var year1 = (yyyy < 1000) ? yyyy + 1900 : yyyy;
        var returnDate = year1 + '-' + month1 + '-' + day1;
        // return value
        return returnDate;

} // end of date_before


function setCustomDateRange() {

	SetDropDownValue('StartDay', today.substr(6,2));
	SetDropDownValue('EndDay', today.substr(6,2));
	SetDropDownValue('StartMonth', today.substr(4,2));
	SetDropDownValue('EndMonth', today.substr(4,2));
	SetDropDownValue('StartYear', (today.substr(0,4)-1));
	SetDropDownValue('EndYear', today.substr(0,4));

} 

function LoadNewImage1() 
{
	SelDateRange = '&SelDateRange='+ImageForm.DateRange.value;

	PrevStart_Date = '&PrevStartDate=' + GetDropDownValue("StartYear") +  '-' + GetDropDownValue("StartMonth") + '-' + GetDropDownValue("StartDay");
	PrevEnd_Date = '&PrevEndDate=' +  + GetDropDownValue("EndYear") +  '-' + GetDropDownValue("EndMonth") + '-' + GetDropDownValue("EndDay");	
	
	start_date = '&start_date=' + eval(GetDropDownValue('DateRange'));
	end_date = '&end_date=' + currdate;
	Exchange = '&Exchange='+ ImageForm.exchange.value
	if(document.ImageForm.Index.checked==true)
	{
		Index = '&Index=1';	
	}
	else
	{
		Index = '&Index=0';	
	}	
	ChartUrl = server + imageparams + Exchange + start_date + end_date + PrevStart_Date + PrevEnd_Date + SelDateRange + Index +"&Button=1";
	document.location.href = ChartUrl;
	return false;
} 

function LoadNewImage2() 
{
	var arrDaysinMonth = new Array(31,28,31,30,31,30,31,31,30,31,30,31);	
	SelDateRange = '&SelDateRange='+ImageForm.DateRange.value;	
	start_date = '&start_date=' + GetDropDownValue("StartYear") +  '-' + GetDropDownValue("StartMonth") + '-' + GetDropDownValue("StartDay");
	end_date = '&end_date=' +  + GetDropDownValue("EndYear") +  '-' + GetDropDownValue("EndMonth") + '-' + GetDropDownValue("EndDay");		
	sdate=GetDropDownValue("StartYear") +  '-' + GetDropDownValue("StartMonth") + '-' + GetDropDownValue("StartDay");
	edate=GetDropDownValue("EndYear") +  '-' + GetDropDownValue("EndMonth") + '-' + GetDropDownValue("EndDay");		
	var daysdiff=0;
	var sdays = 0;
	Exchange = '&Exchange='+ ImageForm.exchange.value
	var aryDate = sdate.split('-');
		varDay = aryDate[2];
		varMonth = aryDate[1];
		varYear = aryDate[0];
	var aryEndDate = edate.split('-');
		varEndDay = aryEndDate[2];
		varEndMonth = aryEndDate[1];
		varEndYear = aryEndDate[0];
	//alert(varDay + " " + varEndDay)	;
	//alert(varMonth + " " + varEndMonth);
	//alert(varYear + " " + varEndYear);
	if (parseInt(varYear) > parseInt(varEndYear))
	{
		alert("Starting Year should not be Greater Than Ending Year");
		return false;
	}
	else if ((parseInt(varMonth) > parseInt(varEndMonth)) && (parseInt(varYear) == parseInt(varEndYear)))
	{
		alert("Starting month should not be Greater Than Ending month")
		return false;
	}
	else if ((parseInt(varDay) > parseInt(varEndDay)) && (parseInt(varMonth) == parseInt(varEndMonth)) && (parseInt(varYear) == parseInt(varEndYear)))
	{
		alert("Starting Date should not be Greater Than Ending Date");
		return false;
	}	
	if ((parseInt(varEndYear) == parseInt(varYear) ) && ((parseInt(varEndMonth) - parseInt(varMonth)) == 1))
	{
		sdays = arrDaysinMonth[parseInt(varMonth)-1];
		daysdiff = sdays - parseInt(varDay);		
		if (daysdiff < 7)
		{			
			if((daysdiff + parseInt(varEndDay)) < 7)
			{
				alert("Please select atleast 7 days to plot the Chart");
				return false;			
			}
		}
	}
	if ((parseInt(varEndYear) == parseInt(varYear) ) && (parseInt(varEndMonth) == parseInt(varMonth)))
	{
		// daysdiff =  parseInt(varEndDay) - parseInt(varDay);
		daysdiff =  varEndDay - varDay;
		if (daysdiff < 7)
		{			
				alert("Please select atleast 7 days to plot the Chart");
				return false;			
		}
	}		
	if(document.ImageForm.Index.checked==true)
	{
		Index = '&Index=1';	
	}
	else
	{
		Index = '&Index=0';	
	}		
	ChartUrl = server + imageparams + Exchange + start_date + end_date + SelDateRange+ Index +"&Button=2";
	document.location.href = ChartUrl;	
	return false;
} 


function SetDropDownValue (ElementName, value) {
	
	for(i = 0; i < eval('document.ImageForm.' + ElementName + '.length'); i++) {
		if (eval('document.ImageForm.' + ElementName + '.options[' + i + '].value') == value) {
			eval('document.ImageForm.' + ElementName + '.options[' + i + '].selected = true');
		}
	}

} // end of SetDropDownValue


function GetDropDownValue (ElementName) {
	for(i = 0; i < eval('document.ImageForm.' + ElementName + '.length'); i++) {
        if (eval('document.ImageForm.' + ElementName + '.options[' + i + '].selected') == true) {
			return (eval('document.ImageForm.' + ElementName + '.options[' + i + '].value'))
        }
	}

} // end of GetDropDownValue


function GetSymbolColors (n_options) {
	var local_symbol_color_list = '';
	var local_symbol_list = '&symbol_list=';
	var local_color_list = '&color_list=';
	for (var i = 0; i <= n_options; i++) {
        str_CheckBox = eval('document.ImageForm.' + 'share' + i + '.checked');

        if (str_CheckBox) {
			local_symbol_list = local_symbol_list + eval('document.ImageForm.' + 'share' + i + '.value') + ',';
			local_color_list = local_color_list + colour[i] + ',';
        }
	}
	
	local_symbol_color_list = local_symbol_list + local_color_list;
	return local_symbol_color_list;
	
} // end of GetOptionValues


function ImagePreloaded() {
	NewImage.complete ? MM_swapImage('ChartImage','',ChartUrl,1) : setTimeout('ImagePreloaded()', 500)
} // end of ImagePreloaded


function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}