var fadeInLenth = 500;

var fadeOutLenth = 500;

var displayLength = 2000;

var fgcolor = "#666666";

var bgcolor = "#ffffff";

var steps = 10;



var titles = new Array();

var links = new Array();



// Press Releases



titles[0] = "Latest Releases: Alfresco and Optaros Announce Platinum-Level Partnership ";

links[0] = "http://www.alfresco.com/media/releases/2007/05/optarosplatinum/";



titles[1] = "Latest Releases: Alfresco Recognized As Laureate By The Computerworld Honors Program";

links[1] = "http://www.alfresco.com/media/releases/2007/05/computerworld/";



titles[2] = "Latest Releases: Alfresco Becomes Founding Member of Red Hat Exchange";

links[2] = "http://www.alfresco.com/media/releases/2007/05/rhx/";



// Media Coverage



titles[3] = "Latest Coverage: The rise of Alfresco: ECM that people will really use";

links[3] = "http://www.alfresco.com/media/coverage/2007/04/linuxworld-rise-of-ecm/";



titles[4] = "Latest Coverage: Adobe Open-Source Move Sets Showdown with Microsoft";

links[4] = "http://www.alfresco.com/media/coverage/2007/04/eweek-flex-open-source/";



titles[5] = "Latest Coverage: Ricoh and Alfresco Team Up";

links[5] = "http://www.alfresco.com/media/coverage/2007/04/econtent-ricoh/";



var fTimer = null;

var timer = null;

var itemCount = 0;

var running = false;

var fadeLevel = 0;

var stage = 0;



function initialiseTicker() {

	itemCount = 0;

	get_xml_file();

	running = false;

}



function incrementCounter() {

	itemCount ++;

	if (itemCount > titles.length) {

		itemCount = 1;

	}

}



function decrementCounter() {

	itemCount --;

	if (itemCount < 1) {

		itemCount = titles.length - 1;

	}

}



function runTickerOld() {

	stage = 1;

	fadeOut();

	incrementCounter();

	setTitle(titles[itemCount]);

	fadeIn();

	if (running == true) {

		// Set the timer

		timer = self.setTimeout("runTicker()", displayLength);

	}

}



function runTicker() {

	stage = 2;

	//timer = self.setTimeout("work()", displayLength);

	work();

}



function work() {

	//alert("running = " + running + ", stage = " + stage);

	if (running == true) {

		//stage = 1 Fading out

		//stage = 2 Swapping

		//stage = 3; Fading in

		//stage = 4; Waiting

	if (stage == 1) { // fade out

		if (running == true && fadeLevel <= steps) {

			setTickerColor(htmlColor(calculateColor(fgcolor, bgcolor, fadeLevel)))

			fadeLevel ++;

			fTimer = self.setTimeout("work()", Math.round(fadeOutLenth/steps));

		}

		if (fadeLevel > steps) {

			stage = 2;

		}

	} else if (stage == 2) { // swap

		incrementCounter();

		setTitle(titles[itemCount - 1]);

		setLink(links[itemCount -1]);

		if (running == true) {

			// Set the timer

			timer = self.setTimeout("work()", 1);

		}

		stage = 3;

	} else if (stage == 3) { // Fade in

		if (running == true && fadeLevel >= 0) {

			setTickerColor(htmlColor(calculateColor(fgcolor, bgcolor, fadeLevel)))

			fadeLevel --;

			fTimer = self.setTimeout("work()", Math.round(fadeInLenth/steps));

		}

		if (fadeLevel < 0) {

			stage = 4;

		}

	} else if (stage == 4) { // Waiting

		if (running == true) {

			// Set the timer

			timer = self.setTimeout("work()", displayLength);

		}

		stage = 1; // next stage

	}

	}

}



function getHTTPObject(){

	var request = new XMLHttpRequest();

	if(window.XMLHttpRequest){

    	request = new XMLHttpRequest();   

	}else if (window.ActiveXObject){

    	request=new ActiveXObject("Microsoft.XMLHTTP");

    	if (! request){

        	request=new ActiveXObject("Msxml2.XMLHTTP");

    	}

    }

	return request;

}



function get_xml_file() {



    var httpreq = getHTTPObject();



    //Precondition: must have a URL

    url = 'http://www.novaworks.it/readFeed.php';

    //if (url == "") url = "http://library.theserverside.com/data/bpXchange?b=ka_bp_systemsint&d=31&f=rss&u=rss"



    httpreq.open("GET", url, true);



    httpreq.onreadystatechange = function (  ) {

        if (httpreq.readyState == 4) {

            last_xml_response = httpreq.responseXML;

            format_rss_data (last_xml_response);

        }

    }

	httpreq.setRequestHeader("Content-Type", "text/xml")

    httpreq.send (null);

}



function format_rss_data (response) {



    var doc = response.documentElement;

    var items = doc.getElementsByTagName('item');

    

	if(items.length > 1)

	{

		titles = new Array();

		links = new Array();

		

	    	for (var i=0; i < items.length; i++) {

	

	        	var title = items[i].getElementsByTagName('title')[0];

	        	var link = items[i].getElementsByTagName('link')[0];

	

	        	titles[i] = title.firstChild.data;

	        	links[i]= link.firstChild.data;	        

	

	        	/*var cbDetails = document.getElementById("cbDetails");

	        	if (cbDetails.checked) {

	           		var desc = items[i].getElementsByTagName('description')[0];

	            	html += "<font size='-1'>"

	                    	+ desc.firstChild.data

	                    	+ "</font><p>";

	        	}*/

	    	}

    }

}



function startTicker() {

	initialiseTicker();

	running = true;

	runTicker();

}



function stopTicker() {

	initialiseTicker();

	if (timer) {

		self.clearTimeout(timer);

	}

}



function pauseTicker() {

	running = false;

	if (timer) {

		self.clearTimeout(timer);

	}

	if (fTimer) {

		self.clearTimeout(fTimer);

	}

	// Restore color

	fadeLevel = 0;

	setTickerColor(htmlColor(calculateColor(fgcolor, bgcolor, fadeLevel)))

}



function unpauseTicker() {

	running = true;

	stage = 4;

	work();

}



function clearTimer() {

}



function fadeIn() {

	if (running == true && fadeLevel >= 0) {

		setTickerColor(htmlColor(calculateColor(fgcolor, bgcolor, fadeLevel)))

		fadeLevel --;

		//fTimer = self.setTimeout("fadeIn()", Math.round(fadeInLenth/steps));

	}

}



function fadeOut() {

	if (running == true && fadeLevel <= steps) {

		setTickerColor(htmlColor(calculateColor(fgcolor, bgcolor, fadeLevel)))

		fadeLevel ++;

		//fTimer = self.setTimeout("fadeOut()", Math.round(fadeOutLenth/steps));

	}

}



function setTickerColor(colour) {

	//alert("Setting color to " + colour);

	tickerContent = document.getElementById('ticker-link');

	if (tickerContent) {

		tickerContent.style.color = colour;

	}

}



function clearTitle() {

	document.getElementById('ticker-content').innerHTML = "";

	return true;

}



function calculateColor(start, end, step) {

	var startColors = makeColorArray(start);

	var endColors = makeColorArray(end);

	

	var colors = null;

	

	if (startColors && endColors) {

		var diff = new Array(endColors[0]-startColors[0], endColors[1]-startColors[1], endColors[2]-startColors[2]);

		colors = new Array(Math.round(startColors[0] + ((diff[0]*step)/steps)), Math.round(startColors[1] + ((diff[1]*step)/steps)), Math.round(startColors[2] + ((diff[2]*step)/steps)));

	}

	

	return colors;

}



function htmlColor(colors) {

	return "rgb(" + colors[0] + ", " + colors[1] + ", " + colors[2] + ")";

}



function makeColorArray(colorStr) {



	var cArray = null;

	

	if (colorStr.length == 7) {

		cArray = new Array(parseInt("0x"+colorStr.substr(1, 2)), parseInt("0x"+colorStr.substr(3, 2)), parseInt("0x"+colorStr.substr(5, 2)));

	} else if (colorStr.length == 18) {

		cArray = new Array(parseInt(colorStr.substr(4, 3)), parseInt(colorStr.substr(9, 3)), parseInt(colorStr.substr(14, 3)));

	} else if (colorStr.length == 15) {

		cArray = new Array(parseInt(colorStr.substr(4, 2)), parseInt(colorStr.substr(8, 2)), parseInt(colorStr.substr(12, 2)));

	} else if (colorStr.length == 12) {

		cArray = new Array(parseInt(colorStr.substr(4, 1)), parseInt(colorStr.substr(7, 1)), parseInt(colorStr.substr(10, 1)));

	}

	

	return cArray;

}



function setTitle(title) {

	document.getElementById('ticker-link').innerHTML = title;

	return true;

}



function setLink(link) {

	document.getElementById('ticker-link').href = link;

	return true;

}