google.load("feeds", "1") //Load Google Ajax Feed API (version 1)
function rssdisplayer(divid, url, feedlimit, showoptions)
{
	
	this.showoptions=showoptions || "" //get string of options to show ("date" and/or "description")
	var feedpointer=new google.feeds.Feed(url) //create new instance of Google Ajax Feed API
	feedpointer.setNumEntries(feedlimit) //set number of items to display
	document.write('<div id="'+divid+'">Loading feed...</div>')
	this.feedcontainer=document.getElementById(divid)
	var displayer=this
	feedpointer.load(function(r){displayer.formatoutput(r)}) //call Feed.load() to retrieve and output RSS feed
}
rssdisplayer.prototype.formatdate=function(datestr)
{
	var itemdate=new Date(datestr)
	return "<span style='color:gray; font-size: 90%'>"+itemdate.toLocaleString()+"</span>"
}
rssdisplayer.prototype.formatoutput=function(result)
{
	if (!result.error)
	{ //if RSS feed successfully fetched
		var thefeeds=result.feed.entries //get all feed entries as a JSON array
		var rssoutput="<ul>"
		for (var i=0; i<thefeeds.length; i++)
		{ //loop through entries
			var itemtitle="<a href=\"" + thefeeds[i].link + "\">" + thefeeds[i].title + "</a>"
			var itemdate=/date/i.test(this.showoptions)? this.formatdate(thefeeds[i].publishedDate) : ""
			var itemdescription=/description/i.test(this.showoptions)? "<br />"+thefeeds[i].content : ""
			rssoutput+="<li>" + itemtitle + " " + itemdate + itemdescription + "</li>"
		}
		rssoutput+="</ul>"
		this.feedcontainer.innerHTML=rssoutput
	}
	else //else, output error
	alert("Error fetching feeds: "+result.error.message)
}

//USAGE SYNTAX: new rssdisplayer("divid", "rssurl", numberofitems, "displayoptions")
//new rssdisplayer("adiv", "http://www.cssdrive.com/index.php/news/rss_2.0/", 5, "date, description")