function ConvertToUnicode(s)
{
	return s.replace(/0/g, '\u06F0').replace(/1/g, '\u06F1').replace(/2/g, '\u06F2').replace(/3/g, '\u06F3').replace(/4/g, '\u06F4').replace(/5/g, '\u06F5').replace(/6/g, '\u06F6').replace(/7/g, '\u06F7').replace(/8/g, '\u06F8').replace(/9/g, '\u06F9');
}

function Calculate()
{
	/*var lg = 48.68;
	var lat = 31.32;*/
	var lg = 48.293;
	var lat = 30.343;
	
	main(m, d, lg, lat);
}

function GetAzanMorning(m, d, lg, lat)
{
	var ep=sun(m,d,4,lg);
	var zr=ep[0];
	delta=ep[1];
	ha=loc2hor(108.0,delta,lat);
	var t1=Round(zr-ha,24);
	ep=sun(m,d,t1,lg);
	zr=ep[0];
	delta=ep[1];
	ha=loc2hor(108.0,delta,lat);
	var t1=Round(zr-ha,24);

	return hms(t1 + prayerAdjustHour);
	//return hms(t1);
}

function GetSunrise(m, d, lg, lat)
{
//
//   t2= Sun rise
//
	var ep=sun(m,d,6,lg);
	var zr=ep[0];
	delta=ep[1];
	ha=loc2hor(90.833,delta,lat);
	var t2=Round(zr-ha,24);
	ep=sun(m,d,t2,lg);
	zr=ep[0];
	delta=ep[1];
	ha=loc2hor(90.833,delta,lat);
	t2=Round(zr-ha,24);
	
	return hms(t2 + prayerAdjustHour);
}

function GetAzanNoon(m, d, lg, lat)
{
//	
//	zr=Zohr
//
	var ep=sun(m,d,12,lg)
	ep=sun(m,d,ep[0],lg)
	var zr=ep[0];
	
	return hms(zr + prayerAdjustHour);
}

function GetSunset(m, d, lg, lat)
{
//
//   t2= Sun set
//
	var ep=sun(m,d,18,lg)
	var zr=ep[0];
	delta=ep[1];
	ha=loc2hor(90.833,delta,lat)
	var t3=Round(zr+ha,24)
	ep=sun(m,d,t3,lg)
	zr=ep[0];
	delta=ep[1];
	ha=loc2hor(90.833,delta,lat)
	t3=Round(zr+ha,24)
	
	return hms(t3 + prayerAdjustHour);
}

function GetAzanNight(m, d, lg, lat)
{
//
//   t2= Maghreb
//
	var ep=sun(m,d,18.5,lg)
	var zr=ep[0];
	delta=ep[1];
	ha=loc2hor(94.3,delta,lat)
	var t4=Round(zr+ha,24)
	ep=sun(m,d,t4,lg)
	zr=ep[0];
	delta=ep[1];
	ha=loc2hor(94.3,delta,lat)
	t4=Round(zr+ha,24)
	
	return hms(t4 + prayerAdjustHour);
}

function ShowInfo(m, d, lg, lat, morning, sunrise, noon, sunset, night)
{
	var t1 = GetAzanMorning(m, d, lg, lat);

//	document.getElementById(morning).innerHTML=ConvertToUnicode(t1);
    document.getElementById(morning).innerHTML=t1;
	temp = document.getElementById("spanMorning");
	if (temp) temp.innerHTML = t1.substring(0,5);
	
	var t2 = GetSunrise(m, d, lg, lat);
	//document.getElementById(sunrise).innerHTML=ConvertToUnicode(t2);
	document.getElementById(sunrise).innerHTML=t2;
	
	var zr = GetAzanNoon(m, d, lg, lat);
//	document.getElementById(noon).innerHTML=ConvertToUnicode(zr);
    document.getElementById(noon).innerHTML=zr;
	temp = document.getElementById("spanNoon");
	if (temp) temp.innerHTML = zr.substring(0,5);
	
	var t3 = GetSunset(m, d, lg, lat);
	//document.getElementById(sunset).innerHTML=ConvertToUnicode(t3);
	document.getElementById(sunset).innerHTML=t3;
	
	var t4 = GetAzanNight(m, d, lg, lat);
	//document.getElementById(night).innerHTML=ConvertToUnicode(t4);
	document.getElementById(night).innerHTML=t4;
	temp = document.getElementById("spanNight");
	if (temp) temp.innerHTML = t4.substring(0,5);
}

function main(m, d, lg, lat)
{
	ShowInfo(m, d, lg, lat, "t1", "t2", "zr", "t3", "t4");
}

function sun(m,d,h,lg)
{
	if(m<7)
		d= 31*(m-1)+d+h/24;
	else
		d=6+30*(m-1)+d+h/24;
	var M=74.2023+0.98560026*d;
	var L=-2.75043+0.98564735*d;
	var lst=8.3162159+0.065709824*Math.floor(d)+1.00273791*24*(d%1)+lg/15;	
	var e=0.0167065;
	var omega=4.85131-0.052954*d;
	var ep=23.4384717+0.00256*cosd(omega);
	var ed=180.0/Math.PI*e;
	var u=M;
	for(var i=1;i<5;i++)
		u=u-(u-ed*sind(u)-M)/(1-e*cosd(u));
	var v=2*atand(tand(u/2)*Math.sqrt((1+e)/(1-e)));
	var theta=L+v-M-0.00569-0.00479*sind(omega);
	var delta=asind(sind(ep)*sind(theta));
	var alpha=180.0/Math.PI*Math.atan2(cosd(ep)*sind(theta),cosd(theta));
	if(alpha>=360)
		alpha-=360;
	var ha=lst-alpha/15;
	var zr=Round(h-ha,24);
	return ([zr,delta])
}

function sind(x){return(Math.sin(Math.PI/180.0*x));}
function cosd(x){return(Math.cos(Math.PI/180.0*x));}
function tand(x){return(Math.tan(Math.PI/180.0*x));}
function atand(x){return(Math.atan(x)*180.0/Math.PI);}
function asind(x){return(Math.asin(x)*180.0/Math.PI);}
function acosd(x){return(Math.acos(x)*180.0/Math.PI);}
function sqrt(x){return(Math.sqrt(x));}
function frac(x){return(x%1);}
function floor(x){return(Math.floor(x));}
function ceil(x){return(Math.ceil(x));}
function loc2hor(z,d,p){
	return(acosd((cosd(z)-sind(d)*sind(p))/cosd(d)/cosd(p))/15);
}
function Round(x,a){
	var tmp=x%a;
	if(tmp<0)
		tmp+=a;
	return(tmp)
}
function hms(x)
{
	x=Math.floor(3600*x);
	h=Math.floor(x/3600);
	mp=x-3600*h;
	m=Math.floor(mp/60);
	s=Math.floor(mp-60*m);
	return(((h<10)? "0" : "")+h.toString()+":"+((m<10)? "0" : "")+m.toString())
	//+":"+((s<10)? "0" : "")+s.toString())
}