Track Javasctipt Errors via Google Analytics

gistfile1.mustache

{% if not debug %}
<script>
var _gaq = window._gaq || [];
window.onerror = function(msg, url, line) {
    var preventErrorAlert = true;
    _gaq.push(['_trackEvent', 'JS Error', msg, '#{{ employee.id|default:"0" }} ip:{{ request.META.REMOTE_ADDR|escapejs }} ua:{{ request.META.HTTP_USER_AGENT|escapejs }} url:' + url + " line:" + line, 0, true]);
    return preventErrorAlert;
};
jQuery.error = function (message) {
    _gaq.push(['_trackEvent', 'jQuery Error', message, '#{{ employee.id|default:"0" }} ip:{{ request.META.REMOTE_ADDR|escapejs }} ua:{{ request.META.HTTP_USER_AGENT|escapejs }}', 0, true]);
}
</script>
{% endif %}