YUI-based numeric stepper widget

Since I had some problems with YUI slider, I decided to write a YUI-based numeric stepper that allows users to select values within a predefined range.
To instantiate the widget include the following files :
 
<!– CSS –>
<link rel="stylesheet" type="text/css" href="stepper/stepper.css" />
 
<!– Dependencies –>
<script type="text/javascript" src="http://yui.yahooapis.com/2.5.2/build/yahoo-dom-event/yahoo-dom-event.js"></script>
 
<!– Stepper source file –>
<script type="text/javascript" src="stepper/stepper-min.js"></script>
 
Then place your stepper in your [...]