<script>


$(function() {

    $(".feed-tabs ul").tabs("div.feeds > div", {

        effect: 'fade',

        onBeforeClick: function(event, i) {

            // get the pane to be opened
            var pane = this.getPanes().eq(i);

            // only load once. remove the if ( ... ){ } clause if you want the page to be loaded every time
            if (pane.is(":empty")) {

                // load it with a page specified in the tab's href attribute
                pane.load(this.getTabs().eq(i).attr("href"));
            }

        }
    });

});
</script>