try {
    Object.extend(Event, {
        _domReady : function() {
            if (arguments.callee.done) return;
            arguments.callee.done = true;
            if (this._timer) clearInterval(this._timer);
            this._readyCallbacks.each(function(f) { f() });
            this._readyCallbacks = null;
        },
        onDOMReady : function(f) {
            if (!this._readyCallbacks) {
                var domReady = this._domReady.bind(this);
                if (document.addEventListener) document.addEventListener("DOMContentLoaded", domReady, false);
                /*@cc_on @*/
                /*@if (@_win32)
                    document.write("<script id=__ie_onload defer src=javascript:void(0)><\/script>");
                    document.getElementById("__ie_onload").onreadystatechange = function() {
                        if (this.readyState == "complete") domReady();
                    };
                /*@end @*/
                if (/WebKit/i.test(navigator.userAgent)) {
                    this._timer = setInterval(function() {
                        if (/loaded|complete/.test(document.readyState)) domReady();
                    }, 10);
                }
                Event.observe(window, 'load', domReady);
                Event._readyCallbacks =  [];
            }
            Event._readyCallbacks.push(f);
        }
    });
} catch(e) {
}


var Magnifier = Class.create();

Magnifier.getInstance = function() {
	if (!Magnifier.instance) {
		Magnifier.instance = new Magnifier();
	}
	return Magnifier.instance;
}

Magnifier.prototype = {
	initialize: function() {
		$A($(document.body).getElementsByTagName("a")).findAll( function(link) {
			return $(link).hasClassName("magnifier");
		}).each( function(magnifier) {
			magnifier.observe("click", function(e) {Magnifier.getInstance().open(e); }.bindAsEventListener($(magnifier)));
		});
	},

	open: function(e) {
		/*alert(e);*/
		var mLink     = Event.element(e);
		var smallImg  = mLink.up().previous();

		var miWrapper = $(document.createElement("div")); // mi stands for "magnified image"
		var miImg     = $(document.createElement("img"));
		var miClose   = $(document.createElement("a"));

		miWrapper.className   = "mi-wrapper";
		miImg.src             = mLink.getAttribute("href");
		miClose.href          = location.href;

		if (this.currentMiWrapper) {
			this.closeCurrent(true);
		}

		var offset = Position.cumulativeOffset(smallImg);

		miWrapper.style.left = offset[0] + "px";
		miWrapper.style.top =  offset[1] + "px";

		document.body.appendChild(miWrapper);
		this.currentMiWrapper = miWrapper;

		miWrapper.appendChild(miImg);
		miWrapper.appendChild(miClose);

		if (miImg.complete) {
			miClose.style.display = "block";
		} else {
			miImg.observe("load", function() { miClose.style.display = "block"; });
		}

		$A([miImg, miClose]).each(function (closeElt) {
			closeElt.observe("click", function(e) {
				Magnifier.getInstance().closeCurrent(false);
				Event.stop(e);
			});
		});
		Event.stop(e);
	},

	closeCurrent: function(reopen) {
		document.body.removeChild(this.currentMiWrapper);
		this.currentMiWrapper = null;
	}
}

Event.onDOMReady(function() { Magnifier.getInstance(); } );