diff --git a/user_guide/nav/moo.fx.pack.js b/user_guide/nav/moo.fx.pack.js
new file mode 100755
index 0000000..8b42283
--- /dev/null
+++ b/user_guide/nav/moo.fx.pack.js
@@ -0,0 +1,241 @@
+/*
+moo.fx pack, effects extensions for moo.fx.
+by Valerio Proietti (http://mad4milk.net) MIT-style LICENSE
+for more info visit (http://moofx.mad4milk.net).
+Wednesday, November 16, 2005
+v1.0.4
+*/
+
+//text size modify, now works with pixels too.
+fx.Text = Class.create();
+fx.Text.prototype = Object.extend(new fx.Base(), {
+	initialize: function(el, options) {
+		this.el = $(el);
+		this.setOptions(options);
+		if (!this.options.unit) this.options.unit = "em";
+	},
+
+	increase: function() {
+		this.el.style.fontSize = this.now + this.options.unit;
+	}
+});
+
+//composition effect, calls Width and Height alltogheter
+fx.Resize = Class.create();
+fx.Resize.prototype = {
+	initialize: function(el, options) {
+		this.h = new fx.Height(el, options); 
+		if (options) options.onComplete = null;
+		this.w = new fx.Width(el, options);
+		this.el = $(el);
+	},
+
+	toggle: function(){
+		this.h.toggle();
+		this.w.toggle();
+	},
+
+	modify: function(hto, wto) {
+		this.h.custom(this.el.offsetHeight, this.el.offsetHeight + hto);
+		this.w.custom(this.el.offsetWidth, this.el.offsetWidth + wto);
+	},
+
+	custom: function(hto, wto) {
+		this.h.custom(this.el.offsetHeight, hto);
+		this.w.custom(this.el.offsetWidth, wto);
+	},
+
+	hide: function(){
+		this.h.hide();
+		this.w.hide();
+	}
+}
+
+//composition effect, calls Opacity and (Width and/or Height) alltogheter
+fx.FadeSize = Class.create();
+fx.FadeSize.prototype = {
+	initialize: function(el, options) {
+		this.el = $(el);
+		this.el.o = new fx.Opacity(el, options);
+		if (options) options.onComplete = null;
+		this.el.h = new fx.Height(el, options);
+		this.el.w = new fx.Width(el, options);
+	},
+
+	toggle: function() {
+		this.el.o.toggle();
+		for (var i = 0; i < arguments.length; i++) {
+			if (arguments[i] == 'height') this.el.h.toggle();
+			if (arguments[i] == 'width') this.el.w.toggle();
+		}
+	},
+
+	hide: function(){
+		this.el.o.hide();
+		for (var i = 0; i < arguments.length; i++) {
+			if (arguments[i] == 'height') this.el.h.hide();
+			if (arguments[i] == 'width') this.el.w.hide();
+		}
+	}
+}
+
+//intended to work with arrays.
+var Multi = new Object();
+Multi = function(){};
+Multi.prototype = {
+	initialize: function(elements, options){
+		this.options = options;
+		this.el = this.getElementsFromArray(elements);
+		for (i=0;i<this.el.length;i++){
+			this.effect(this.el[i]);
+		}
+	},
+
+	getElementsFromArray: function(array) {
+		var elements = new Array();
+		for (i=0;i<array.length;i++) { 
+			elements.push($(array[i])); 
+		}
+		return elements;
+	}
+}
+
+//Fadesize with arrays
+fx.MultiFadeSize = Class.create();
+fx.MultiFadeSize.prototype = Object.extend(new Multi(), {
+	effect: function(el){
+		el.fs = new fx.FadeSize(el, this.options);
+	},
+
+	showThisHideOpen: function(el, delay, mode){
+		for (i=0;i<this.el.length;i++){
+			if (this.el[i].offsetHeight > 0 && this.el[i] != el && this.el[i].h.timer == null && el.h.timer == null){
+				this.el[i].fs.toggle(mode);
+				setTimeout(function(){el.fs.toggle(mode);}.bind(el), delay);
+			}
+			
+		}
+	},
+
+	hide: function(el, mode){
+		el.fs.hide(mode);
+	}
+});
+
+var Remember = new Object();
+Remember = function(){};
+Remember.prototype = {
+	initialize: function(el, options){
+		this.el = $(el);
+		this.days = 365;
+		this.options = options;
+		this.effect();
+		var cookie = this.readCookie();
+		if (cookie) {
+			this.fx.now = cookie;
+			this.fx.increase();
+		}
+	},
+
+	//cookie functions based on code by Peter-Paul Koch
+	setCookie: function(value) {
+		var date = new Date();
+		date.setTime(date.getTime()+(this.days*24*60*60*1000));
+		var expires = "; expires="+date.toGMTString();
+		document.cookie = this.el+this.el.id+this.prefix+"="+value+expires+"; path=/";
+	},
+
+	readCookie: function() {
+		var nameEQ = this.el+this.el.id+this.prefix + "=";
+		var ca = document.cookie.split(';');
+		for(var i=0;i < ca.length;i++) {
+			var c = ca[i];
+			while (c.charAt(0)==' ') c = c.substring(1,c.length);
+			if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
+		}
+		return false;
+	},
+
+	custom: function(from, to){
+		if (this.fx.now != to) {
+			this.setCookie(to);
+			this.fx.custom(from, to);
+		}
+	}
+}
+
+fx.RememberHeight = Class.create();
+fx.RememberHeight.prototype = Object.extend(new Remember(), {
+	effect: function(){
+		this.fx = new fx.Height(this.el, this.options);
+		this.prefix = 'height';
+	},
+	
+	toggle: function(){
+		if (this.el.offsetHeight == 0) this.setCookie(this.el.scrollHeight);
+		else this.setCookie(0);
+		this.fx.toggle();
+	},
+	
+	resize: function(to){
+		this.setCookie(this.el.offsetHeight+to);
+		this.fx.custom(this.el.offsetHeight,this.el.offsetHeight+to);
+	},
+
+	hide: function(){
+		if (!this.readCookie()) {
+			this.fx.hide();
+		}
+	}
+});
+
+fx.RememberText = Class.create();
+fx.RememberText.prototype = Object.extend(new Remember(), {
+	effect: function(){
+		this.fx = new fx.Text(this.el, this.options);
+		this.prefix = 'text';
+	}
+});
+
+
+//use to attach effects without using js code, just classnames and rel attributes.
+ParseClassNames = Class.create();
+ParseClassNames.prototype = {
+	initialize: function(options){
+		var babies = document.getElementsByTagName('*') || document.all;
+		for (var i = 0; i < babies.length; i++) {
+			var el = babies[i];
+			//attach the effect, from the classNames;
+			var effects = this.getEffects(el);
+			for (var j = 0; j < effects.length; j++) {
+				if (j == 1 && options) options.onComplete = null;
+				el[effects[j]+"fx"] = new fx[effects[j]](el, options);
+			}
+			//execute methods, from rel
+			if (el.rel) {
+				el.crel = el.rel.split(' ');
+				if (el.crel[0].indexOf("fx_") > -1) {
+					var event = el.crel[0].replace('fx_', '');
+					var tocompute = this.getEffects($(el.crel[1]));
+					el["on"+event] = function(){
+						for (var f = 0; f < tocompute.length; f++) {
+							$(this.crel[1])[tocompute[f]+"fx"][this.crel[2] || "toggle"](this.crel[3] || null, this.crel[4] || null);
+						}
+					}
+				}
+			}
+		}
+	},
+
+	getEffects: function(el){
+		var effects = new Array();
+		var css = el.className.split(' ');
+		for (var i = 0; i < css.length; i++) {
+			if (css[i].indexOf('fx_') > -1) {
+				var effect = css[i].replace('fx_', '');
+				effects.push(effect);
+			}
+		}
+		return effects;
+	}
+}
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