diff --git a/README.markdown b/README.markdown
index 002eba9..fdb269a 100644
--- a/README.markdown
+++ b/README.markdown
@@ -4,7 +4,7 @@ jQuery Parallax
 jQuery Parallax is a script that simulates the parallax effect as seen on [nikebetterworld.com](http://www.nikebetterworld.com/).
 
 Plugin: jQuery Parallax  
-Version: 1.1.3
+Version: 1.1.4
 Author: [Ian Lunn](http://www.ianlunn.co.uk/)  
 Twitter: [@IanLunn](http://www.twitter.com/IanLunn)
 Demo: [jQuery Vertical Parallax Demo](http://www.ianlunn.co.uk/plugins/jquery-parallax/)  
@@ -17,6 +17,9 @@ http://www.gnu.org/licenses/gpl.html
 Updates
 -------
 
+08/11/2013 - Fixed parameter parsing and upgraded to jQuery 1.10.1
+Fix by [ADG - Alessandro del Gobbo](http://www.adg-idea.com)
+
 12/6/2012 - Fixed a few demo bugs and made easier to use
     - Fixed a bug that prevented the third section from working
     - Removed the need to use the adjuster value
diff --git a/index.html b/index.html
index 0a07d59..7fdb1a4 100755
--- a/index.html
+++ b/index.html
@@ -1,11 +1,12 @@
 <!DOCTYPE html>
-<html xmlns="http://www.w3.org/1999/xhtml">
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <title>jQuery Parallax Plugin Demo</title>
 <link href="style.css" rel="stylesheet" type="text/css" />
-<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
-<script type="text/javascript" src="scripts/jquery.parallax-1.1.3.js"></script>
+<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
+<script src="http://code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
+<script type="text/javascript" src="scripts/jquery.parallax-1.1.4.js"></script>
 <script type="text/javascript" src="scripts/jquery.localscroll-1.2.7-min.js"></script>
 <script type="text/javascript" src="scripts/jquery.scrollTo-1.4.2-min.js"></script>
 <script type="text/javascript">
@@ -16,8 +17,8 @@
 	//xPosition - Horizontal position of the element
 	//inertia - speed to move relative to vertical scroll. Example: 0.1 is one tenth the speed of scrolling, 2 is twice the speed of scrolling
 	//outerHeight (true/false) - Whether or not jQuery should use it's outerHeight option to determine when a section is in the viewport
-	$('#intro').parallax("50%", 0.1);
-	$('#second').parallax("50%", 0.1);
+	$('#intro').parallax("50%", 0.1);
+	$('#second').parallax("50%", 0.1);
 	$('.bg').parallax("50%", 0.4);
 	$('#third').parallax("50%", 0.3);
 
@@ -63,17 +64,17 @@ <h2>What Happens When JavaScript is Disabled?</h2>
 	</div> <!--#third-->
 	
 	<div id="fifth">
-		<div class="story">
+		<div class="story">
 		    <p>Check out my new plugin <a href="http://www.sequencejs.com" title="Sequence.js">Sequence.js</a> for parallax effects and a whole lot more!</p>
-	        
-	        <h2>Ian Lunn</h2>
-	        <ul>
-	            <li><strong>Twitter</strong>: <a href="http://www.twitter.com/IanLunn" title="Follow Ian on Twitter">@IanLunn</a></li>
-	            <li><strong>GitHub</strong>: <a href="http://www.github.com/IanLunn" title="Follow Ian on GitHub">IanLunn</a></li>
-	            <li><strong>Website</strong>: <a href="http://www.ianlunn.co.uk/" title="Ian Lunn Design">www.ianlunn.co.uk</a></li>
-	        </ul>
-	        
-	        <p>This demo is based on the <a href="http://www.nikebetterworld.com" title="Nike Better World">Nikebetterworld.com</a> website.</p>
+	        
+	        <h2>Ian Lunn</h2>
+	        <ul>
+	            <li><strong>Twitter</strong>: <a href="http://www.twitter.com/IanLunn" title="Follow Ian on Twitter">@IanLunn</a></li>
+	            <li><strong>GitHub</strong>: <a href="http://www.github.com/IanLunn" title="Follow Ian on GitHub">IanLunn</a></li>
+	            <li><strong>Website</strong>: <a href="http://www.ianlunn.co.uk/" title="Ian Lunn Design">www.ianlunn.co.uk</a></li>
+	        </ul>
+	        
+	        <p>This demo is based on the <a href="http://www.nikebetterworld.com" title="Nike Better World">Nikebetterworld.com</a> website.</p>
 	        
 	        <h2>Credits</h2>
 	        <p>This plugin makes use of some scripts and images made by others:</p>
diff --git a/scripts/jquery.parallax-1.1.3.js b/scripts/jquery.parallax-1.1.3.js
deleted file mode 100644
index f3569dc..0000000
--- a/scripts/jquery.parallax-1.1.3.js
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
-Plugin: jQuery Parallax
-Version 1.1.3
-Author: Ian Lunn
-Twitter: @IanLunn
-Author URL: http://www.ianlunn.co.uk/
-Plugin URL: http://www.ianlunn.co.uk/plugins/jquery-parallax/
-
-Dual licensed under the MIT and GPL licenses:
-http://www.opensource.org/licenses/mit-license.php
-http://www.gnu.org/licenses/gpl.html
-*/
-
-(function( $ ){
-	var $window = $(window);
-	var windowHeight = $window.height();
-
-	$window.resize(function () {
-		windowHeight = $window.height();
-	});
-
-	$.fn.parallax = function(xpos, speedFactor, outerHeight) {
-		var $this = $(this);
-		var getHeight;
-		var firstTop;
-		var paddingTop = 0;
-		
-		//get the starting position of each element to have parallax applied to it		
-		$this.each(function(){
-		    firstTop = $this.offset().top;
-		});
-
-		if (outerHeight) {
-			getHeight = function(jqo) {
-				return jqo.outerHeight(true);
-			};
-		} else {
-			getHeight = function(jqo) {
-				return jqo.height();
-			};
-		}
-			
-		// setup defaults if arguments aren't specified
-		if (arguments.length < 1 || xpos === null) xpos = "50%";
-		if (arguments.length < 2 || speedFactor === null) speedFactor = 0.1;
-		if (arguments.length < 3 || outerHeight === null) outerHeight = true;
-		
-		// function to be called whenever the window is scrolled or resized
-		function update(){
-			var pos = $window.scrollTop();				
-
-			$this.each(function(){
-				var $element = $(this);
-				var top = $element.offset().top;
-				var height = getHeight($element);
-
-				// Check if totally above or totally below viewport
-				if (top + height < pos || top > pos + windowHeight) {
-					return;
-				}
-
-				$this.css('backgroundPosition', xpos + " " + Math.round((firstTop - pos) * speedFactor) + "px");
-			});
-		}		
-
-		$window.bind('scroll', update).resize(update);
-		update();
-	};
-})(jQuery);
diff --git a/scripts/jquery.parallax-1.1.5.js b/scripts/jquery.parallax-1.1.5.js
new file mode 100644
index 0000000..19094df
--- /dev/null
+++ b/scripts/jquery.parallax-1.1.5.js
@@ -0,0 +1,75 @@
+/*
+Plugin: jQuery Parallax
+Version 1.1.5
+Author: ADG Idea Alessandro del Gobbo (based on code of Ian Lunn)
+Twitter: @alexoverflow
+Author URL: http://www.adg-idea.com/
+Project on GitHub: https://github.com/aledelgo/jQuery-Parallax
+
+Dual licensed under the MIT and GPL licenses:
+http://www.opensource.org/licenses/mit-license.php
+http://www.gnu.org/licenses/gpl.html
+*/
+
+// USAGE:
+// .parallax(xPosition, speedFactor, outerHeight) options:
+//xPosition - Horizontal position of the element
+//yPosition - Vertical initial position of the element (IN PIXELS!!!)
+//inertia - speed to move relative to vertical scroll. Example: 0.1 is one tenth the speed of scrolling, 2 is twice the speed of scrolling
+//outerHeight (true/false) - Whether or not jQuery should use it's outerHeight option to determine when a section is in the viewport
+/*$('#intro').parallax("50%", null 0.1);
+ $('#second').parallax("50%", 30, 0.1);*/
+
+(function( $ ){
+	var $window = $(window),
+		windowHeight;
+
+	$window.resize(function () {
+		windowHeight = $(this).height();
+	}).triggerHandler('resize');
+
+	$.fn.parallax = function(xpos, ypos, speedFactor, outerHeight) {
+		var $this = $(this),
+			getHeight,
+			firstTop;
+
+		// setup defaults if arguments aren't specified
+		xpos = xpos || "50%";
+		ypos = ypos || 0;
+		speedFactor = speedFactor || 0.5;
+
+		if (typeof outerHeight === 'undefined')  {
+			outerHeight = true;
+		}
+
+		if (outerHeight) {
+			getHeight = function(jqo) {
+				return jqo.outerHeight(true);
+			};
+		} else {
+			getHeight = function(jqo) {
+				return jqo.height();
+			};
+		}
+
+		//get the starting position of each element to have parallax applied to it
+		$window.bind('scroll resize', function (){
+			var pos = $window.scrollTop();
+
+			$this.each(function(){
+				var $element = $(this),
+					top = $element.offset().top,
+					height = getHeight($element);
+
+				firstTop = $this.offset().top;
+
+				// Check if totally above or totally below viewport
+				if (top + height < pos || top > pos + windowHeight) {
+					return;
+				}
+
+				$this.css('backgroundPosition', xpos + " " + Math.round(ypos + (firstTop - pos) * speedFactor) + "px");
+			});
+		}).triggerHandler('scroll');
+	};
+})(jQuery);
