//pre-load images
var listImg = new Image();
listImg.src = 'images/nobelnews.gif';
var treeImg = new Image();
treeImg.src = 'images/congressnews.gif';
var formImg = new Image();
formImg.src = 'images/ordernews.gif';


function makeNews(c,l,f,i){
	this.copy = c;
	this.link = l;
	this.follow = f;
	this.img = i;
	this.write = writeNews;
}

function writeNews(){
	var str = '';
	str += '<a href="' + this.link + '">';
	str += '<img border="0" src="' + this.img.src + '"></a><br>';
	str += this.copy + '<br>';
        str +=  '<a href="' + this.link + '">' + this.follow + '</a>';
	return str;
}

var newsArray = new Array();
newsArray[0] = new makeNews("",'http://www.cpepphysics.org/nobel.html','',listImg).write();

newsArray[1] = new makeNews("",'http://holt.house.gov/','',treeImg).write();

newsArray[2] = new makeNews("",'http://www.cpepphysics.org/order_australia.html','',formImg).write();

var nIndex = 0;
var timerID = null;
function rotateNews(){
	var len = newsArray.length;
	if(nIndex >= len)
		nIndex = 0;
	document.getElementById('stories').innerHTML = newsArray[nIndex];
	nIndex++;
	timerID = setTimeout('rotateNews()',6000);
}
function pauseNews() {
	if (timerID != null) {
		clearTimeout(timerID);
		timerID = null;
	}
}

function playNews() {
	if (timerID == null) {
		timerID = setTimeout('rotateNews()', 1000);
	}
}