<script src="http://yui.yahooapis.com/3.1.0/build/yui/yui-min.js"></script>

YUI({
    //Last Gallery Build of this module
    gallery: 'gallery-2009.10.28-14'
}).use('gallery-idletimer', function(Y) {
 
    Y.IdleTimer.subscribe("idle", function(){
        //handle when the user becomes idle
    });
 
    Y.IdleTimer.subscribe("active", function(){
         //handle when the user becomes active
    });
 
    //start the timer with a default timeout of 30s
    Y.IdleTimer.start();
});