function gfeedfetcherCATS(divid,footerid){
  this.feedlabels=[] // array holding lables for each RSS feed
  this.feedurls=[]
  this.feeds=[] // array holding combined RSS feeds' entries from Feed API (result.feed.entries)
  this.feedsfetched=0; // number of feeds fetched
  this.feedlimit=5;
  this.showoptions="" // Optional components of RSS entry to show (none by default)
  this.sortstring="date" // sort by "date" by default
  this.feedcontainer=document.getElementById(divid); // el DIV del resumen
  if (footerid) this.footercontainer=document.getElementById(footerid); // el DIV del footer

}

gfeedfetcherCATS.prototype.addFeed=function(label,url){
 	this.feedlabels[this.feedlabels.length]=label;
 	this.feedurls[this.feedurls.length]=url
}

gfeedfetcherCATS.prototype.filterfeed=function(feedlimit, sortstr){
	this.feedlimit=feedlimit
	if (typeof sortstr!="undefined")
	this.sortstring=sortstr
}

gfeedfetcherCATS.prototype.displayoptions=function(parts){
	this.showoptions=parts //set RSS entry options to show ("date, datetime, time, snippet, label, description")
}

gfeedfetcherCATS.prototype.init=function(){
	this.feedsfetched=0 //reset number of feeds fetched to 0 (in case init() is called more than once)
	this.feeds=[] //reset feeds[] array to empty (in case init() is called more than once)
	var displayer=this
	for (var i=0; i<this.feedurls.length; i++){ //loop through the specified RSS feeds' URLs
		var feedpointer=new google.feeds.Feed(this.feedurls[i]) //create new instance of Google Ajax Feed API
		var items_to_show=(this.feedlimit<=this.feedurls.length)? 1 : Math.floor(this.feedlimit/this.feedurls.length) //Calculate # of entries to show for each RSS feed
		if (this.feedlimit%this.feedurls.length>0 && this.feedlimit>this.feedurls.length && i==this.feedurls.length-1) //If this is the last RSS feed, and feedlimit/feedurls.length yields a remainder
			items_to_show+=(this.feedlimit%this.feedurls.length) //Add that remainder to the number of entries to show for last RSS feed
		feedpointer.setNumEntries(items_to_show) //set number of items to display
		feedpointer.load(function(r){displayer._fetch_data_as_array(r)}) //call Feed.load() to retrieve and output RSS feed
	}
}

gfeedfetcherCATS._formatdate=function(datestr, showoptions){
	var itemdate=new Date(datestr)
	var parseddate=(showoptions.indexOf("datetime")!=-1)? itemdate.toLocaleString() : (showoptions.indexOf("date")!=-1)? itemdate.toLocaleDateString() : (showoptions.indexOf("time")!=-1)? itemdate.toLocaleTimeString() : ""
	var itemdate2=new Date(datestr)
	var parseddate2 = isodatetime(itemdate2)
	var prueba = parseddate2.substring(0,19)
	prueba = prueba + "Z"
	var parseddate3= prettyDate(prueba)
	return "<span class='fechaT'>" + parseddate3 + "</span>"
}

gfeedfetcherCATS._sortarray=function(arr, sortstr){
	var sortstr=(sortstr=="label")? "ddlabel" : sortstr //change "label" string (if entered) to "ddlabel" instead, for internal use
	if (sortstr=="title" || sortstr=="ddlabel"){ //sort array by "title" or "ddlabel" property of RSS feed entries[]
		arr.sort(function(a,b){
		var fielda=a[sortstr].toLowerCase()
		var fieldb=b[sortstr].toLowerCase()
		return (fielda<fieldb)? -1 : (fielda>fieldb)? 1 : 0
		})
	}
	else{ //else, sort by "publishedDate" property (using error handling, as "publishedDate" may not be a valid date str if an error has occured while getting feed
		try{
			arr.sort(function(a,b){return new Date(b.publishedDate)-new Date(a.publishedDate)})
		}
		catch(err){}
	}
}

gfeedfetcherCATS.prototype._fetch_data_as_array=function(result){
	var thisfeed=(!result.error)? result.feed.entries : "" //get all feed entries as a JSON array or "" if failed
	if (thisfeed=="") //if error has occured fetching feed
		alert("Google Feed API Error: "+result.error.message)
	for (var i=0; i<thisfeed.length; i++) //For each entry within feed
	result.feed.entries[i].ddlabel=this.feedlabels[this.feedsfetched] //extend it with a "ddlabel" property
	this.feeds=this.feeds.concat(thisfeed) //add entry to array holding all feed entries
	this._signaldownloadcomplete() //signal the retrieval of this feed as complete (and move on to next one if defined)
}

gfeedfetcherCATS.prototype._signaldownloadcomplete=function(){
	this.feedsfetched+=1
	if (this.feedsfetched==this.feedurls.length) //if all feeds fetched
		this._displayresult(this.feeds) //display results
}

gfeedfetcherCATS.prototype._displayresult=function(feeds){
  gfeedfetcherCATS._sortarray(feeds, this.sortstring)
      var rssoutput = '';
      var avatar = "";
      for (var i=0; i<feeds.length; i++){
        var itemurl = feeds[i].link;
        var itemtitle = feeds[i].title;
        var itemlabel=/label/i.test(this.showoptions)? ''+this.feeds[i].ddlabel+'' : " "
        var itemdate=gfeedfetcherCATS._formatdate(feeds[i].publishedDate, this.showoptions)
        var itemdescription=/description/i.test(this.showoptions)? ""+feeds[i].content : /snippet/i.test(this.showoptions)? "\n" + feeds[i].contentSnippet  : ""
        var imagenCAT="http://bolsanegra.net/wp-content/themes/bolsaNegraHome/images/iconos/CAT" + itemlabel + ".jpg";
        rssoutput += '<h2>' + itemlabel + '</h2><img class=\"imgCAT\" src=\"' + imagenCAT + '\" />' + itemdescription;
      }
      this.feedcontainer.innerHTML=rssoutput;
      var footeroutput=itemdate + '<br><a target=\"_blank\" href=\"' + itemurl + '\" title=\"' + itemtitle + '\">Leer m&aacute;s</a>';
      this.footercontainer.innerHTML=footeroutput;
}

// --------------------------------------------------------- MOSTRAR FEEDS CATEGORIAS ---------------------------------------------------------
	// la funcion llega con:
	// divid = el ID del DIV contenedor
	// footerid = el ID del DIV del footer si lo hay sino ""
	// feedname = la categoria
	// feedurl = la direccion del feed
function bsn_categorias(divid,footerid,feedname,feedurl){
  var newsfeed=new gfeedfetcherCATS(divid,footerid);
  newsfeed.addFeed(feedname, feedurl);
  newsfeed.displayoptions("label datetime description"); 
  newsfeed.filterfeed(1, "date"); 
  newsfeed.init(); 
}