var Tweeter = new Object();
Tweeter.title = "Our Latest Musings";
Tweeter.tweetCount = 5;
Tweeter.links = new Array();
Tweeter.titles = new Array();
Tweeter.descriptions = new Array();
Tweeter.dates = new Array();
Tweeter.location = null;

Tweeter.Initialize = function()
{
	var scripts = document.getElementsByTagName('script');
	for(var i=0; i<scripts.length; i++)
	{
		if(scripts[i].src.indexOf("Tweeter.js") != -1)
		{
			Tweeter.location = scripts[i];
			Tweeter.Request();
			break;
		}
	}
}

Tweeter.Request = function()
{
	var gateway = 'service/gateway.php?feed='+escape(this.url);
	this.request = (window.XMLHttpRequest) ? new XMLHttpRequest(): new ActiveXObject("Microsoft.XMLHTTP"); 
	this.request.onreadystatechange = function() { Tweeter.checkReadyState(); };
	this.request.open('GET', gateway, true);
	this.request.send(gateway);
}

Tweeter.onResponse = function(feed)
{
	var items = feed.getElementsByTagName('item');
	for(var i=0; i<items.length; i++) 
	{
		this.links.push(items[i].getElementsByTagName('link')[0].firstChild.nodeValue);
		this.titles.push(items[i].getElementsByTagName('title')[0].firstChild.nodeValue);
		this.descriptions.push(items[i].getElementsByTagName('description')[0].firstChild.nodeValue);
		this.dates.push(items[i].getElementsByTagName('pubDate')[0].firstChild.nodeValue);
	}
	var ul = document.createElement('ul');
	ul.id = 'tweetWidget';
	var title = document.createElement('li');
	title.className = 'tweetTitle';
	title.appendChild(document.createTextNode(this.title));
	ul.appendChild(title);
	for(var i=0; i<this.tweetCount; i++)
	{
		var li = document.createElement('li');
		var link = document.createElement('a');
		link.target='_blank';
		link.appendChild(document.createTextNode(this.descriptions[i]));
	    link.setAttribute('href', this.links[i]);
	    li.appendChild(link);
	    ul.appendChild(li);
	}
	
	this.location.parentNode.insertBefore(ul, this.location.nextSibling);
}
	
Tweeter.checkReadyState = function()
{
	switch(this.request.readyState)
	{
		case 1: break;
		case 2: break;
		case 3: break;
		case 4:
			this.onResponse(this.request.responseXML.documentElement);
	}
}

window.onload = function() { Tweeter.Initialize(); }