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

//Relative URL syntax:
var lastrssbridgeurl="http://www.programbusiness.com/3.0/testRSS.aspx"
var lastrssbridgeurlDNF="http://www.programbusiness.com/3.0/GetRSSDNF.aspx"

//Absolute URL syntax. Uncomment below line if you wish to use an absolute reference:
//var lastrssbridgeurl="http://"+window.location.hostname+"/lastrss/bridge.php"

////////////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(RSS_id, cachetime, divId, divClass, delay, logicswitch){

 
this.RSS_id=RSS_id //Array key indicating which RSS feed to display
this.cachetime=cachetime //Time to cache feed, in minutes. 0=no cache.
this.tickerid=divId //ID of ticker div to display information
this.delay=delay //Delay between msg change, in miliseconds.
this.logicswitch=(typeof logicswitch!="undefined")? logicswitch : ""
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.description=[], this.pubdate=[] //Arrays to hold each component of an RSS item
this.ajaxobj=createAjaxObj()
//    alert("in befre init")
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
//alert("here before" + RSS_id)
if ( RSS_id == "DNF" )
this.getAjaxcontentDNF()
else
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
var parameters="id="+encodeURIComponent(this.RSS_id)+"&cachetime="+this.cachetime+"&bustcache="+new Date().getTime()

//alert("ajaxcontents  " + lastrssbridgeurl)
//alert("in getajaxcontent real")
this.ajaxobj.onreadystatechange=function(){instanceOfTicker.initialize()}
this.ajaxobj.open('GET', lastrssbridgeurl, true)
 //alert(this.ajaxobj.xml) 
this.ajaxobj.send(null)
}
}

rssticker_ajax.prototype.getAjaxcontentDNF=function(){
if (this.ajaxobj){

var instanceOfTicker=this
var parameters="id="+encodeURIComponent(this.RSS_id)+"&cachetime="+this.cachetime+"&bustcache="+new Date().getTime()

//  alert("ajaxcontents  " + lastrssbridgeurlDNF)

this.ajaxobj.onreadystatechange=function(){instanceOfTicker.initialize()}
this.ajaxobj.open('GET', lastrssbridgeurlDNF, true)
 //alert(this.ajaxobj.xml) 
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(){ 
 
 
 // ---------------------------------
 
 
   var httpRequest;
   //alert("in login---js");
        if (window.XMLHttpRequest) { // Mozilla, Safari, ...
            httpRequest = new XMLHttpRequest();
            if (httpRequest.overrideMimeType) {
                httpRequest.overrideMimeType('text/xml');
                // See note below about this line
            }
        } 
        else if (window.ActiveXObject) { // IE
            try {
                httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
            } 
            catch (e) {
                try {
                    httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
                } 
                catch (e) {}
            }
        }

        if (!httpRequest) {
            alert("Giving up :( Cannot create an XMLHTTP instance");
            return false;
        }
		else{
		   // alert ("in else ajax can work")
		    		httpRequest.open("GET", "testRSS", false);
		    		   	  httpRequest.setRequestHeader("Content-Type", "text/xml");
		    		   	  //alert(httpRequest.responseXML)
		}
		
 
 //----------------------------------
if (this.ajaxobj.readyState == 4){ //if request of file completed
if (this.ajaxobj.status==200){ //if request was successful
var xmldata=this.ajaxobj.responseXML
//alert("xmldata === " + this.ajaxobj.responseXML )
if(xmldata.getElementsByTagName("item").length==0){ //if no <item> elements found in returned content
document.getElementById(this.tickerid).innerHTML="<b>Error</b> fetching remote RSS feed!<br />"+this.ajaxobj.responseText
return
}
var instanceOfTicker=this
this.feeditems = xmldata.getElementsByTagName("item")

//alert( xmldata)
//alert( xmldata.hasChildNodes() )
//Cycle through RSS XML object and store each peice of an item inside a corresponding array

//this.feeditems.length

//x=xmldata.documentElement.childNodes;
//alert(x.length)
//for (i=0;i<x.length;i++)
//  {
//  
//  alert(x[i].nodeName + " : " + x[i].childNodes[0].nodeValue );
//   
//   
//  }


//for (var i=0; i<5; i++){
// 
// this.title[i]= "title constant " //this.feeditems[i].getElementsByTagName("title")[0].firstChild.nodeValue
// this.link[i]= "http://www.nmsdata.com" // this.feeditems[i].getElementsByTagName("link")[0].firstChild.nodeValue
// this.description[i]= "desc constant " //this.feeditems[i].getElementsByTagName("description")[0].firstChild.nodeValue 
//this.pubdate[i] = "pub date " + i

//}
//alert("before init array")
xTitle = xmldata.getElementsByTagName('title');
//alert("before init array")
xdate = xmldata.getElementsByTagName('date');
xlink = xmldata.getElementsByTagName('link');
xdesc = xmldata.getElementsByTagName('desc');

//alert("in here before loop" + xTitle.length)
for (i=0;i<xTitle.length;i++)
{
    //alert(xTitle[i].childNodes[0].nodeValue);
    this.title[i] =   xTitle[i].childNodes[0].nodeValue
    this.pubdate[i] =   xdate[i].childNodes[0].nodeValue
    this.link[i] =   xlink[i].childNodes[0].nodeValue
    this.description[i] = xdesc[i].childNodes[0].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!
var tickerDiv=document.getElementById(this.tickerid)
var linktitle='<div class="rsstitle"><a href="'+this.link[this.pointer]+'">'+this.title[this.pointer]+'</a></div>'
var description='<div class="rssdescription">'+this.description[this.pointer]+'</div>'
var feeddate='<div class="rssdate">'+this.pubdate[this.pointer]+'</div>'
//wasimif (this.logicswitch.indexOf("description")==-1) description=""
//wasimif (this.logicswitch.indexOf("date")==-1) feeddate=""
var tickercontent=linktitle+ "<br>Published:"  + feeddate + "<br>" + description +"..." //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.feeditems.length
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){
//alert("in")
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])
}