function changeMainDiv(id){
	for (i=0; i<=4; i++) {
		document.getElementById("div"+i).style.display = "none";
		}
	document.getElementById("div"+id).style.display = "block";
	}
function showAll(){
	date(); time(); last();
	}
function time(){
	var today=new Date()
	var h=today.getHours()
	var m=today.getMinutes()
	var s=today.getSeconds()
	// add a zero in front of numbers<10
	m=checkTime(m)
	s=checkTime(s)
	document.getElementById('time').innerHTML=h+":"+m+":"+s
	t=setTimeout('time()',500)
	}
function checkTime(i){
	if (i<10){
		i="0" + i}
		return i
	}
function date(){
	var d=new Date()
	var weekday=new Array("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday");
	var d=new Date()
	var month=new Array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December");
	var d = new Date()
	var d = new Date()
	document.getElementById('date').innerHTML=weekday[d.getDay()] + " " + d.getDate() + " "+ month[d.getMonth()] + ", " + d.getFullYear();
	}
function last(){
	document.getElementById('last').innerHTML=document.lastModified;
	}