/*	Simple Javascript RSS Reader Version 1.0
	Copyright (c) 2006 CS Truter
	Written by Christoff Truter
	email: Christoff@cstruter.com - (Please let me know if you intend to use the script) */

/* Replace all occurances of a string
  (Parameters) totalValue:'complete string' 
		oldValue:'value to be replaced' newValue:'value used for replace' */

function Replace(totalValue,oldValue,newValue)
{
	while(totalValue.indexOf(oldValue) > -1)
		totalValue=totalValue.replace(oldValue,newValue);
			return totalValue;
}

/* Get XML Node
   (Parameters) TagName:'XML Element' node:'Element row number' */

function getNode(TagName, node)
{
	var currentNode = (node == null) ? xmlDoc.getElementsByTagName(TagName) : 
					items[node].getElementsByTagName(TagName);
	if(currentNode.length > 0)
		return currentNode[0].firstChild.nodeValue;
}

/* Load XML Object
   (Parameters) rssFeed:'RSS File' Body:'Layer for RSS Body' Title:'Layer for RSS Title' */

function ReadRSS(rssFeed, Body, nbElt) 
{
	//rssTitle = document.getElementById(Title);	
	rssBody = document.getElementById(Body);
	showNbElt = nbElt;

	try
	{
		/*if (window.ActiveXObject)
		{
			var errorHappendHere = "Check Browser and security settings";
			xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
		}
		else
		{
			var errorHappendHere = "Apparently one cant read remote xml via firefox, please copy the file to your server";
			xmlDoc = document.implementation.createDocument("","",null);
		}
	
		xmlDoc.async=false;
		xmlDoc.load(rssFeed);*/
		
		var xmlDoc = null;

		if (!window.ActiveXObject) { // Mozilla, Safari,...
			xmlDoc = new XMLHttpRequest();
			if (xmlDoc.overrideMimeType) {
				xmlDoc.overrideMimeType('text/xml');
			}
		} else if (window.ActiveXObject) { // IE
			
			try {
				xmlDoc = new ActiveXObject("Msxml2.XMLHTTP");
			} catch (e) {
				try {
					xmlDoc = new ActiveXObject("Microsoft.XMLHTTP");
				} catch (e) {}
			}
		}
		xmlDoc.onreadystatechange = function() {
			if(xmlDoc.readyState==4) {
				/*xmlObj = xmlDoc.responseXML.getElementsByTagName('changedate').item(0);

				var sDate = xmlObj.getElementsByTagName('date').item(0).firstChild.data;

				var chDate=new Date(sDate);
				alert(chDate);*/
				
				//////////////
				
				items=xmlDoc.responseXML.getElementsByTagName('entry');
				SetRSSTemplates();
			}
		}
		xmlDoc.open("GET", rssFeed, true);
		xmlDoc.send(null);
		
		
	
		//items=xmlDoc.getElementsByTagName('entry');
		//SetRSSTemplates();
	}
	
	catch(e)
	{
		//rssTitle.innerHTML = 'Error occured';
		rssBody.innerHTML = 'Thrown Error:'+e.message+"<br/>Note: "+errorHappendHere;
	}
}

/* Set HTML Template
	Did it this way to make the look and feel of the feed easy customizable, dont like mixing
	layout with code. */

function SetRSSTemplates()
{
	if (rssBody)
	{
		var buffer = "";
		
		var nbB = items.length;
		if(items.length > showNbElt){
			nbB = showNbElt;
		}
		for(var i=0; i< nbB; i++) 
		{
			var output = (document.all) ? Replace(rssBody.innerHTML,"(::Link::)",getNode('id',i)) 
									   : Replace(rssBody.innerHTML,"%28::Link::%29",getNode('id',i));
			output = Replace(output,"(::Title::)",getNode('title',i));
			output = Replace(output,"(::Pubdate::)",getNode('pubDate',i));
			output = Replace(output,"(::Description::)",getNode('description',i));
			buffer+=output;
		}
		rssBody.innerHTML = buffer;
	}

	/*if (rssTitle)
	{
		var output = Replace(rssTitle.innerHTML,"(::Title::)",getNode('title'));
		output = (document.all) ? Replace(output,"(::Link::)",getNode('link'))
							   : Replace(output,"%28::Link::%29",getNode('link'));		
		output = Replace(output,"(::Description::)",getNode('description'));
		rssTitle.innerHTML = output;
	}*/
}