$(document).ready(function() {	

$.YQL = function(query, callback) {
    var encodedQuery = encodeURIComponent(query.toLowerCase()),
        url = 'http://query.yahooapis.com/v1/public/yql?q='
            + encodedQuery + '&format=json&callback=?';
    $.getJSON(url, callback);
};
$.YQL("select * from rss where url='http://weather.yahooapis.com/forecastrss?p=SWXX0031'",function(data){
            var w=data.query.results.item;
          	var class=w.condition.text;
          	var encodedclass = class.replace(/\s+/g, '-').toLowerCase();
          	
          	$('body').addClass(encodedclass);
          	
       });    
});