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){
	        alert('IE msxm12, error')
		try{
	  	   httprequest=new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch (e){
		alert('IE microsfot, error')
		}
	}
}
return httprequest
}

// -------------------------------------------------------------------
// Main RSS Ticker Object function
// rss_ticker(RSS_id, cachetime, divId, divClass, delay, optionalswitch)
// -------------------------------------------------------------------

function rss_ticker(RSS_id, cachetime, divId, divClass, delay, optionalswitch, numlimit){
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 optionalswitch!="undefined")? optionalswitch : -1
this.mouseoverBol=0 //Boolean to indicate whether mouse is currently over ticker (and pause it if it is)
this.pointer=0
this.numlimit  = (typeof numlimit!="undefined")? numlimit : 3
this.ajaxobj=createAjaxObj()
document.write('<div id="'+divId+'" class="'+divClass+'">Initializing News...</div>')
this.getAjaxcontent()
}

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

rss_ticker.prototype.getAjaxcontent=function(){
	if (this.ajaxobj){
	        var instanceOfTicker=this
		var parameters="id="+encodeURIComponent(this.RSS_id) +" &cachetime="+this.cachetime+"&bustcache="+new Date().getTime()
		this.ajaxobj.onreadystatechange=function(){instanceOfTicker.initialize()}
		//document.write("parameters: " + parameters);
		//alert("text1=" + parameters)
		this.ajaxobj.open('GET', "../html/testrss.php?"+parameters, true)
		//alert("xml1=" + this.ajaxobj.responseXML)
		//this.ajaxobj.open('GET', "http://www.google.com", true)
		alert("text2=" + parameters + ' value=' + this.ajaxobj.responseText)
		
		this.ajaxobj.send(null)
	}
}

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

rss_ticker.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
			//alert(xmldata.getElementsByTagName("item").length)
			//alert("xml=" + this.ajaxobj.responseXML)
			//alert("text=" + this.ajaxobj.responseText)
		
			document.getElementById(this.tickerid).innerHTML="<b>Error</b> WHEN fetching remote RSS feed!<br />"+this.ajaxobj.responseText
			return
		}
		var instanceOfTicker=this
		this.feeditems=xmldata.getElementsByTagName("item")
                //alert("there are items" + this.feeditems.length)
		//Cycle through RSS XML object and store each piece of the item element as an attribute of the element
		for (var i=0; i<this.feeditems.length; i++){
			this.feeditems[i].setAttribute("ctitle", this.feeditems[i].getElementsByTagName("title")[0].firstChild.nodeValue)
			this.feeditems[i].setAttribute("clink", this.feeditems[i].getElementsByTagName("link")[0].firstChild.nodeValue)
			this.feeditems[i].setAttribute("cdescription", this.feeditems[i].getElementsByTagName("description")[0].firstChild.nodeValue)
		}
		this.shownews();
		//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
// -------------------------------------------------------------------

rss_ticker.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{
		var tickerDiv=document.getElementById(this.tickerid)
		var tickercontent='<a href="'+this.feeditems[this.pointer].getAttribute("clink")+'">'+this.feeditems[this.pointer].getAttribute("ctitle")+'</a>'
		//if (this.logicswitch=="showdescription")
		tickercontent+="<br />"+this.feeditems[this.pointer].getAttribute("cdescription")
		tickerDiv.innerHTML=tickercontent
		this.pointer=(this.pointer<this.feeditems.length-1)? this.pointer+1 : 0
		setTimeout(function(){instanceOfTicker.rotatemsg()}, this.delay) //update container every second
	}
}


rss_ticker.prototype.shownews=function(){
	var tickerDiv=document.getElementById(this.tickerid)
	var tickercontent=''
	for (var i=0; i<this.feeditems.length; i++){
	        if (i> this.numlimit) {
	        	break
	        }
		tickercontent += '<p>'
		//var ndate = Date.parse(this.feeditems[i].getElementsByTagName("pubDate")[0].firstChild.nodeValue)
		this.feeditems[i].setAttribute("ctitle", this.feeditems[i].getElementsByTagName("title")[0].firstChild.nodeValue)
		this.feeditems[i].setAttribute("cdate", this.feeditems[i].getElementsByTagName("pubDate")[0].firstChild.nodeValue)
		this.feeditems[i].setAttribute("clink", this.feeditems[i].getElementsByTagName("link")[0].firstChild.nodeValue)
		this.feeditems[i].setAttribute("cdescription", this.feeditems[i].getElementsByTagName("description")[0].firstChild.nodeValue)
		//var ndate = Date.parse(this.feeditems[i].getAttribute("cdate"))
		//tickercontent += Date.getMonth()
		tickercontent += '<img src="../images/icn_news_item.gif" /> '+ '<a class="newsurl" href="'+this.feeditems[i].getAttribute("clink")+'" target="new">' + this.feeditems[i].getAttribute("ctitle")+'</a>'+ '<br /><span class="news_date">' + this.feeditems[i].getAttribute("cdate") + '</span><br /> ' 
		if (this.logicswitch=="showdescription")
			tickercontent+="<br />"+this.feeditems[i].getAttribute("cdescription")
		tickercontent += '</p><br/>'			
	}
	tickerDiv.innerHTML=tickercontent

}