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
} // function rssdisplayer( divid, url, feedlimit, showoptions )


rssdisplayer.prototype.formatdate=function( datestr )
{
    var itemdate = new Date( datestr )
    return "<span style='color:gray; font-size: 90%'>" + itemdate.toLocaleString() + "</span>"
}  // rssdisplayer.prototype.formatdate=function( datestr )


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 + "\" target=\"_blank\">" + 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 : /snippet/i.test( this.showoptions ) ? "<br />" + thefeeds[ i ].contentSnippet  : ""
            rssoutput += "<li>" + itemtitle + " " + itemdate + itemdescription + "</li>"
        }
        rssoutput += "</ul>"
        this.feedcontainer.innerHTML = rssoutput
    }
    else //else, output error
        alert( "Error fetching feeds: " + result.error.message )
} // rssdisplayer.prototype.formatoutput = function( result )

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