HTML DOM listener

gistfile1.js

(function() {
    // Load jQuery
    var script = document.createElement("SCRIPT");
    script.src = 'https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js';
    script.type = 'text/javascript';
    document.getElementsByTagName("head")[0].appendChild(script);

    // Poll for jQuery to come into existance
    var checkReady = function(callback) {
        if (window.jQuery) {
            callback(jQuery);
        }
        else {
            window.setTimeout(function() { checkReady(callback); }, 100);
        }
    };

    // Start polling...
    checkReady(function($) {

        $("<style type='text/css'> .watch-element { border: 2px solid red;} </style>").appendTo("head");

        var watchElement;
        $(document).click(function(event) {
            if(watchElement === undefined) {
                watchElement = $(event.target);
                watchElement.addClass("watch-element");
                watchElement.bind("DOMSubtreeModified",function() {
                    console.log(watchElement.html());
                });
            }
        });

    });
})();