(function($){
    var row = 'odd';
    $.fn.weatherfeed = function(locations,options){
        var defaults={
            unit:'c',
            image:true,
            highlow:true,
            wind:true,
            link:true,
            showerror:true
        };
        var options = $.extend(defaults,options);
        return this.each(function(i,e){
            var $e=$(e);
            if(!$e.hasClass('weatherFeed'))
                $e.addClass('weatherFeed');
            if(!$.isArray(locations))
                return false;
            var count=locations.length;
            if(count>10)
                count=10;
            var locationid='';
            for(var i=0;i<count;i++){
                if(locationid!='')
                    locationid+=',';
                locationid+="'"+locations[i]+"'";
            }
            now=new Date()
            var query="select * from weather.forecast where location in ("+locationid+") and u='"+options.unit+"'";
            var api='http://query.yahooapis.com/v1/public/yql?q='+encodeURIComponent(query)+'&rnd='+now.getFullYear()+now.getMonth()+now.getDay()+now.getHours()+'&format=json&callback=?';
            $.ajax({
                type:'GET',
                url:api,
                dataType:'json',
                success:function(data){
                    if(data.query){
                        if(data.query.results.channel.length>0){
                            var result=data.query.results.channel.length;
                            for(var i=0;i<result;i++){
                                _callback(e,data.query.results.channel[i],options);
                            }
                        } else{
                            _callback(e,data.query.results.channel,options);
                        }
                    } else{
                        if(options.showerror)
                            $e.html('<p>Weather information unavailable</p>');
                    }
                },
                error:function(data){
                    if(options.showerror)$e.html('<p>Weather request failed</p>');
                }
            });
        });
    };
    var _callback=function(e,feed,options){
        var $e=$(e);
        var wd=feed.wind.direction;
        if(wd>=348.75&&wd<=360){wd="N"};
        if(wd>=0&&wd<11.25){wd="N"};
        if(wd>=11.25&&wd<33.75){wd="NNE"};
        if(wd>=33.75&&wd<56.25){wd="NE"};
        if(wd>=56.25&&wd<78.75){wd="ENE"};
        if(wd>=78.75&&wd<101.25){wd="E"};
        if(wd>=101.25&&wd<123.75){wd="ESE"};
        if(wd>=123.75&&wd<146.25){wd="SE"};
        if(wd>=146.25&&wd<168.75){wd="SSE"};
        if(wd>=168.75&&wd<191.25){wd="S"};
        if(wd>=191.25&&wd<213.75){wd="SSW"};
        if(wd>=213.75&&wd<236.25){wd="SW"};
        if(wd>=236.25&&wd<258.75){wd="WSW"};
        if(wd>=258.75&&wd<281.25){wd="W"};
        if(wd>=281.25&&wd<303.75){wd="WNW"};
        if(wd>=303.75&&wd<326.25){wd="NW"};
        if(wd>=326.25&&wd<348.75){wd="NNW"};
        var wf=feed.item.forecast[0];
        wpd=feed.item.pubDate;
        n=wpd.indexOf(":");
        tpb=_getTimeAsDate(wpd.substr(n-2,8));
        tsr=_getTimeAsDate(feed.astronomy.sunrise);
        tss=_getTimeAsDate(feed.astronomy.sunset);
        if(tpb>tsr&&tpb<tss){daynight='d';}
        else{daynight='n';}
        var html='<div class="weatherItem '+row+'"';
        html+='>';
        if(options.image)
            html+='<a href="http://france.meteofrance.com/france/meteo?PREVISIONS_PORTLET.path=previsionsdept/DEPT15" target="_blank" ><img class="weatherImg" width=75 height=54 src="http://l.yimg.com/a/i/us/nws/weather/gr/'+feed.item.condition.code+daynight+'.png" alt="meteo" /></a>';    
        html+='<div class="weatherCity">'+feed.location.city+'</div>';
        html+='<div class="weatherTemp">'+feed.item.condition.temp+'&deg;</div>';
        html+='<div class="weatherDesc">'+feed.item.condition.text+'</div>';
        if(options.highlow)html+='<div class="weatherRange">High: '+wf.high+'&deg; Low: '+wf.low+'&deg;</div>';
        if(options.wind)html+='<div class="weatherWind">Wind: '+wd+' '+feed.wind.speed+feed.units.speed+'</div>';
        if(options.link)html+='<div class="weatherLink"><a href="'+feed.item.link+'">Read full forecast</a></div>';
        html+='</div>';
        if(row=='odd'){row='even';}
        else{row='odd';}
        $e.append(html);
    };
    var _getTimeAsDate=function(t){
        d=new Date();
        r=new Date(d.toDateString()+' '+t);
        return r;
    };
})(jQuery);