function GMTclock(){
	var time = new Date()
	var gmtMS = time.getTime() + (time.getTimezoneOffset() * 60000)
	var gmtTime = new Date(gmtMS)
	var weekday = gmtTime.getDay()
	var day = gmtTime.getDate()
	var month = gmtTime.getMonth()
	var year = gmtTime.getYear()
	var hr = gmtTime.getHours()
	var min = gmtTime.getMinutes()
	var sec = gmtTime.getSeconds()
	if (hr >= 24){
	hr = hr-24
	}
	if (hr < 0){
	hr -= -24
	}
	if (hr < 10){
	hr = " " + hr
	}
	if (min < 10){
	min = "0" + min
	}
	if (sec < 10){
	sec = "0" + sec
	}
	if(year < 1000){
		year += 1900
	}
	var dayArray = new Array("Sun","Mon","Tue","Wed", "Thu","Fri","Sat")
	var monthArray = new Array("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec")
	return dayArray[weekday] + ", " + monthArray[month] + " " + day + " " + year + ", " + hr + ":" + min + ":" + sec + " GMT"
}
function worldClock(zone, region, city_name){
var dst = 0
var time = new Date()
var gmtMS = time.getTime() + (time.getTimezoneOffset() * 60000)
var gmtTime = new Date(gmtMS)
var day = gmtTime.getDate()
var month = gmtTime.getMonth()
var year = gmtTime.getYear()
if(year < 1000){
	year += 1900
}

var hr = gmtTime.getHours() + zone
var min = gmtTime.getMinutes()
var sec = gmtTime.getSeconds()

if (hr >= 24){
hr = hr-24
}
if (hr < 0){
hr -= -24
}
if (hr < 10){
hr = " " + hr
}
if (min < 10){
min = "0" + min
}
if (sec < 10){
sec = "0" + sec
}
if (region == "NAmerica"){
	var startDST = new Date()
	var endDST = new Date()
	startDST.setMonth(3)
	startDST.setHours(2)
	startDST.setDate(1)
	var dayDST = startDST.getDay()
	if (dayDST != 0){
		startDST.setDate(8-dayDST)
		}
		else{
		startDST.setDate(1)
		}
	endDST.setMonth(9)
	endDST.setHours(1)
	endDST.setDate(31)
	dayDST = endDST.getDay()
	endDST.setDate(31-dayDST)
	var currentTime = new Date()
	currentTime.setMonth(month)
	currentTime.setYear(year)
	currentTime.setDate(day)
	currentTime.setHours(hr)
	if(currentTime >= startDST && currentTime < endDST){
		dst = 1
	}
}
if (region == "Europe"){
	var startDST = new Date()
	var endDST = new Date()
	startDST.setMonth(2)
	startDST.setHours(1)
	startDST.setDate(31)
	var dayDST = startDST.getDay()
	startDST.setDate(31-dayDST)
	endDST.setMonth(9)
	endDST.setHours(0)
	endDST.setDate(31)
	dayDST = endDST.getDay()
	endDST.setDate(31-dayDST)
	var currentTime = new Date()
	currentTime.setMonth(month)
	currentTime.setYear(year)
	currentTime.setDate(day)
	currentTime.setHours(hr)
	if(currentTime >= startDST && currentTime < endDST){
		dst = 1
	}
}

if (region == "SAmerica"){
	var startDST = new Date()
	var endDST = new Date()
	startDST.setMonth(9)
	startDST.setHours(0)
	startDST.setDate(1)
	var dayDST = startDST.getDay()
	if (dayDST != 0){
		startDST.setDate(22-dayDST)
		}
		else{
		startDST.setDate(15)
		}
	endDST.setMonth(1)
	endDST.setHours(11)
	endDST.setDate(1)
	dayDST = endDST.getDay()
	if (dayDST != 0){
		endDST.setDate(21-dayDST)
		}
		else{
		endDST.setDate(14)
		}
	var currentTime = new Date()
	currentTime.setMonth(month)
	currentTime.setYear(year)
	currentTime.setDate(day)
	currentTime.setHours(hr)
	if(currentTime >= startDST || currentTime < endDST){
		dst = 1
	}
}
if (region == "Cairo"){
	var startDST = new Date()
	var endDST = new Date()
	startDST.setMonth(3)
	startDST.setHours(0)
	startDST.setDate(30)
	var dayDST = startDST.getDay()
	if (dayDST < 5){
		startDST.setDate(28-dayDST)
	}
	else {
		startDST.setDate(35-dayDST)
	}
	endDST.setMonth(8)
	endDST.setHours(11)
	endDST.setDate(30)
	dayDST = endDST.getDay()
	if (dayDST < 4){
		endDST.setDate(27-dayDST)
	}
	else{
		endDST.setDate(34-dayDST)
	}
	var currentTime = new Date()
	currentTime.setMonth(month)
	currentTime.setYear(year)
	currentTime.setDate(day)
	currentTime.setHours(hr)
	if(currentTime >= startDST && currentTime < endDST){
		dst = 1
	}
}
if (region == "Israel"){
	var startDST = new Date()
	var endDST = new Date()
	startDST.setMonth(3)
	startDST.setHours(2)
	startDST.setDate(1)
	endDST.setMonth(8)
	endDST.setHours(2)
	endDST.setDate(25)
	dayDST = endDST.getDay()
	if (dayDST != 0){
		endDST.setDate(32-dayDST)
	}
	else{
		endDST.setDate(1)
		endDST.setMonth(9)
	}
	var currentTime = new Date()
	currentTime.setMonth(month)
	currentTime.setYear(year)
	currentTime.setDate(day)
	currentTime.setHours(hr)
	if(currentTime >= startDST && currentTime < endDST){
		dst = 1
	}
}
if (region == "Beirut"){
	var startDST = new Date()
	var endDST = new Date()
	startDST.setMonth(2)
	startDST.setHours(0)
	startDST.setDate(31)
	var dayDST = startDST.getDay()
	startDST.setDate(31-dayDST)
	endDST.setMonth(9)
	endDST.setHours(11)
	endDST.setDate(31)
	dayDST = endDST.getDay()
	endDST.setDate(30-dayDST)
	var currentTime = new Date()
	currentTime.setMonth(month)
	currentTime.setYear(year)
	currentTime.setDate(day)
	currentTime.setHours(hr)
	if(currentTime >= startDST && currentTime < endDST){
		dst = 1
	}
}
if (region == "Baghdad"){
	var startDST = new Date()
	var endDST = new Date()
	startDST.setMonth(3)
	startDST.setHours(3)
	startDST.setDate(1)
	endDST.setMonth(9)
	endDST.setHours(3)
	endDST.setDate(1)
	dayDST = endDST.getDay()
	var currentTime = new Date()
	currentTime.setMonth(month)
	currentTime.setYear(year)
	currentTime.setDate(day)
	currentTime.setHours(hr)
	if(currentTime >= startDST && currentTime < endDST){
		dst = 1
	}
}
if (region == "Australia"){
	var startDST = new Date()
	var endDST = new Date()
	startDST.setMonth(9)
	startDST.setHours(2)
	startDST.setDate(31)
	var dayDST = startDST.getDay()
	startDST.setDate(31-dayDST)
	endDST.setMonth(2)
	endDST.setHours(2)
	endDST.setDate(31)
	dayDST = endDST.getDay()
	endDST.setDate(31-dayDST)
	var currentTime = new Date()
	currentTime.setMonth(month)
	currentTime.setYear(year)
	currentTime.setDate(day)
	currentTime.setHours(hr)
	if(currentTime >= startDST || currentTime < endDST){
		dst = 1
	}
}
if (dst == 1){
	hr -= -1
	if (hr >= 24){
	hr = hr-24
	}
	if (hr < 10){
	hr = " " + hr
	}
}
return city_name +  ' ' + hr + ":" + min
}


function changeAllClock(){
	document.getElementById('gmt-time').innerHTML = GMTclock().toString();
	document.getElementById('ny-time').innerHTML = worldClock(-5, 'NAmerica', 'New York').toString();
	document.getElementById('london-time').innerHTML = worldClock(0, 'Europe', 'London').toString();
	document.getElementById('hamburg-time').innerHTML = worldClock(1, 'Europe', 'Frankfurt').toString();
	document.getElementById('tokyo-time').innerHTML = worldClock(10, 'Australia', 'Tokyo').toString();
	document.getElementById('sydney-time').innerHTML = worldClock(11, 'Australia', 'Sydney').toString();
	setTimeout('changeAllClock()', 1000);
}
if (window.addEventListener)
	window.addEventListener("load", changeAllClock, false);
else if (window.attachEvent && !window.opera)
	window.attachEvent("onload", changeAllClock);