var LOADER = {
    init: function() {
        stylesheets = {};
	jQuery("link[rel='stylesheet']").each(function() {
            stylesheets[jQuery(this).attr('href')] = true;
	});
	this.stylesheets = stylesheets;
    },
    loadStylesheet: function(url) {
        if (!this.stylesheets.hasOwnProperty(url)) {
            jQuery('head').append('<link href="'
                + url + '" type="text/css" rel="stylesheet" />');
            this.stylesheets[url] = true;
        }
    }
};
LOADER.init();