jQuery.fn.trackExternalLinks = function (trackurl) {
    this.each(function () {
        jQuery(this)
            .attr('target', '_blank')
            .click(function () {
                jQuery('<iframe src="' + trackurl + this.href + '" style="visibility: hidden; width: 0px; height: 1px; position: absolute; top: 0; left: 0"></iframe>')
                    .appendTo(document.body);
            })
    });
}
jQuery(function () { jQuery('a[rel=external]').trackExternalLinks(URL + '/out.php?r='); })