var RSSRequestObject = false; // XMLHttpRequest Object
var Backend = '/proxy.aspx'; // Backend url
window.setInterval("update_timer()", 1200000); // update the data every 20 mins


if (window.XMLHttpRequest) // try to create XMLHttpRequest
	RSSRequestObject = new XMLHttpRequest();

if (window.ActiveXObject)	// if ActiveXObject use the Microsoft.XMLHTTP
	RSSRequestObject = new ActiveXObject("Microsoft.XMLHTTP");


/*
* onreadystatechange function
*/
function ReqChange() {

	// If data received correctly
	if (RSSRequestObject.readyState==4) {
	
		// if data is valid
		if (RSSRequestObject.responseText.indexOf('invalid') == -1) 
		{ 	
			// Parsing Feeds
			try {
			var node = RSSRequestObject.responseXML.documentElement; 
			
			// Get the  title, link, description
			var title = node.getElementsByTagName('title').item(0).firstChild.data;
			var links = node.getElementsByTagName('link').item(0).firstChild.data;
			var description = node.getElementsByTagName('description').item(0).firstChild.data;
			
			//  content = '<div class="channeltitle"><a href="'+links+'" target="_blank">'+title+' | '+links+'</a></div>';
			//content += '<div class="channeldesc">'+description+'</div>';
		
			// Browse items
			var items = node.getElementsByTagName('item');
			if (items.length == 0) {
				content = '<div class=error>No feeds</div>';
			} else {
				content = '<p>';
				for (var n=4; n >= 0; n--)
				//for (var n=items.length-1; n >= 0; n--)
				{
					var itemTitle = items[n].getElementsByTagName('title').item(0).firstChild.data;
					//var Summary = items[n].getElementsByTagName('summary').item(0).firstChild.data;
					//var itemDesc = items[n].getElementsByTagName('description').item(0).firstChild.data;
					var itemDate = items[n].getElementsByTagName('pubDate').item(0).firstChild.data;
					var itemLink = items[n].getElementsByTagName('link').item(0).firstChild.data;
					
					content += '<div class="itemtitle"><a href="'+itemLink+'" target="_blank" >'+itemTitle+'</a></div>';
					content += '<div class="itemdate">'+itemDate+'</div>';
					//content += '<div>'+itemDesc+'</div>';
					//content += '<div class="itemlink">Go to: <a href="'+itemLink+'" target="_blank">'+itemLink+'</a></div>';
				}
				
	
				content += '</p>';
			}
			// Display the result
			document.getElementById("ajaxreader").innerHTML = content;

			// Tell the reader the everything is done
			document.getElementById("status").innerHTML = "Done.";
			
				
			} catch(e) {
				
				// Tell the reader that there was error requesting data
				document.getElementById("status").innerHTML = '<div class="error">Error requesting data.<div>';
				//alert(e);
				return;
			}
		}
		else {
			// Tell the reader that there was error requesting data
			document.getElementById("status").innerHTML = "<div class=error>Error requesting data.<div>";
		}
		
		HideShow('status');
	}
	
}

/*
* Main AJAX RSS reader request
*/
function RSSRequest() {

	// change the status to requesting data
	HideShow('status');
	document.getElementById("status").innerHTML = "Requesting data ...";
	
	// Prepare the request
	RSSRequestObject.open("GET", Backend , true);
	// Set the onreadystatechange function
	RSSRequestObject.onreadystatechange = ReqChange;
	// Send
	RSSRequestObject.send(null); 
}

/*
* Timer
*/
function update_timer() {
	RSSRequest();
}


function HideShow(id){
	var el = GetObject(id);
	if(el.style.display=="none")
	el.style.display='';
	else
	el.style.display='none';
}

function GetObject(id){
	var el = document.getElementById(id);
	return(el);
}