// Modified significantly for use on www.remembernina.com

// -------------------------------------------------------------------
// Advanced RSS Ticker (Ajax invocation) core file
// Author: Dynamic Drive (http://www.dynamicdrive.com)
// -------------------------------------------------------------------

//Absolute URL syntax. Uncomment below line if you wish to use an absolute reference:
//var lastrssbridgeurl="http://"+window.location.hostname+"/lastrss/bridge.php"
Date.prototype.DAYS=new Array("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday");
Date.prototype.MONTHS=new Array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December");
Date.prototype.toCandleString=function(){
	var day = this.DAYS[this.getDay()];
        var isAm = this.getHours() < 12;
        var hour = this.getHours() % 12;
        if ( hour == 0 ) hour = 12;
        var minute = this.getMinutes();
        var date = this.MONTHS[this.getMonth()] + " " + this.getDate() + ", " + this.getFullYear();
        var time = ( hour < 10 ? "0" + hour : hour ) + ":" + ( minute < 10 ? "0" + minute : minute ) + " " + ( isAm ? "AM" : "PM" );

        return day + ", " + date + " at " + time;
}

////////////No need to edit beyond here//////////////

function createAjaxObj(){
var httprequest=false
if (window.XMLHttpRequest){ // if Mozilla, Safari etc
httprequest=new XMLHttpRequest()
if (httprequest.overrideMimeType)
httprequest.overrideMimeType('text/xml')
}
else if (window.ActiveXObject){ // if IE
try {
httprequest=new ActiveXObject("Msxml2.XMLHTTP");
} 
catch (e){
try{
httprequest=new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e){}
}
}
return httprequest
}

// -------------------------------------------------------------------
// Main RSS Ticker Object function
// rssticker_ajax(RSS_id, cachetime, divId, divClass, delay, optionallogicswitch)
// -------------------------------------------------------------------

function rssticker_ajax(rssurl, divId, divClass, delay){
this.rssurl=rssurl;
this.tickerid=divId
this.delay=delay //Delay between msg change, in miliseconds.
this.mouseoverBol=0 //Boolean to indicate whether mouse is currently over ticker (and pause it if it is)
this.pointer=0
this.opacitysetting=0.2 //Opacity value when reset. Internal use.
this.title=[], this.link=[], this.author=[], this.pubdate=[] //Arrays to hold each component of an RSS item
this.ajaxobj=createAjaxObj()
document.write('<div id="'+divId+'" class="'+divClass+'" >Initializing ticker...</div>')
if (window.getComputedStyle) //detect if moz-opacity is defined in external CSS for specified class
this.mozopacityisdefined=(window.getComputedStyle(document.getElementById(this.tickerid), "").getPropertyValue("-moz-opacity")==1)? 0 : 1
this.getAjaxcontent()
}

// -------------------------------------------------------------------
// getAjaxcontent()- Makes asynchronous GET request to "bridge.php" with the supplied parameters
// -------------------------------------------------------------------

rssticker_ajax.prototype.getAjaxcontent=function(){
if (this.ajaxobj){
var instanceOfTicker=this
this.ajaxobj.onreadystatechange=function(){instanceOfTicker.initialize()}
this.ajaxobj.open('GET', this.rssurl, true)
this.ajaxobj.send(null)
}
}

// -------------------------------------------------------------------
// initialize()- Initialize ticker method.
// -Gets contents of RSS content and parse it using JavaScript DOM methods 
// -------------------------------------------------------------------

rssticker_ajax.prototype.initialize=function(){ 
if (this.ajaxobj.readyState == 4){ //if request of file completed
if (this.ajaxobj.status==200){ //if request was successful
var xmldata=this.ajaxobj.responseXML
if(xmldata.getElementsByTagName("item").length==0){ //if no <item> elements found in returned content
document.getElementById(this.tickerid).innerHTML="No candles have been lit."
return
}
var instanceOfTicker=this
this.feeditems=xmldata.getElementsByTagName("item")
//Cycle through RSS XML object and store each peice of an item inside a corresponding array
var count=this.feeditems.length;
var itemindex;
for (var i=0; i<count; i++){
this.title[i]=this.feeditems[i].getElementsByTagName("title")[0].firstChild.nodeValue
this.link[i]=this.feeditems[i].getElementsByTagName("link")[0].firstChild.nodeValue
this.author[i]=this.feeditems[i].getElementsByTagName("author")[0].firstChild.nodeValue
this.pubdate[i]=new Date(Date.parse(this.feeditems[i].getElementsByTagName("pubDate")[0].firstChild.nodeValue));
}
document.getElementById(this.tickerid).onmouseover=function(){instanceOfTicker.mouseoverBol=1}
document.getElementById(this.tickerid).onmouseout=function(){instanceOfTicker.mouseoverBol=0}
this.rotatemsg()
}
}
}

// -------------------------------------------------------------------
// rotatemsg()- Rotate through RSS messages and displays them
// -------------------------------------------------------------------

rssticker_ajax.prototype.rotatemsg=function(){
var instanceOfTicker=this
if (this.mouseoverBol==1) //if mouse is currently over ticker, do nothing (pause it)
setTimeout(function(){instanceOfTicker.rotatemsg()}, 100)
else{ //else, construct item, show and rotate it!
this.pointer=Math.floor(this.title.length*Math.random());
var tickerDiv=document.getElementById(this.tickerid)
var linktitle='<p class="rsstitle"><a href="'+this.link[this.pointer]+'">'+this.title[this.pointer]+'</a></p>'
var feeddate='<p class="rssdate">Candle lit for Nina on '+this.pubdate[this.pointer].toCandleString()+' by '+this.author[this.pointer]+'</p>'
var tickercontent=linktitle+feeddate //STRING FOR FEED CONTENTS 
this.fadetransition("reset") //FADE EFFECT- RESET OPACITY
tickerDiv.innerHTML=tickercontent
this.fadetimer1=setInterval(function(){instanceOfTicker.fadetransition('up', 'fadetimer1')}, 100) //FADE EFFECT- PLAY IT
//this.pointer=(this.pointer<this.feeditems.length-1)? this.pointer+1 : 0
setTimeout(function(){instanceOfTicker.rotatemsg()}, this.delay) //update container every second
}
}

// -------------------------------------------------------------------
// fadetransition()- cross browser fade method for IE5.5+ and Mozilla/Firefox
// -------------------------------------------------------------------

rssticker_ajax.prototype.fadetransition=function(fadetype, timerid){
var tickerDiv=document.getElementById(this.tickerid)
if (fadetype=="reset")
this.opacitysetting=0.2
if (tickerDiv.filters && tickerDiv.filters[0]){
if (typeof tickerDiv.filters[0].opacity=="number") //IE6+
tickerDiv.filters[0].opacity=this.opacitysetting*100
else //IE 5.5
tickerDiv.style.filter="alpha(opacity="+this.opacitysetting*100+")"
}
else if (typeof tickerDiv.style.MozOpacity!="undefined" && this.mozopacityisdefined){
tickerDiv.style.MozOpacity=this.opacitysetting
}
if (fadetype=="up")
this.opacitysetting+=0.2
if (fadetype=="up" && this.opacitysetting>=1)
clearInterval(this[timerid])
}