// execute your scripts when DOM is ready. this is a good habit 
$(function() {         
         
    // initialize scrollable  
    $("div.scrollable").scrollable({ 
        vertical:true,  
        size: 3 
         
    // use mousewheel plugin 
    }).mousewheel();     
     
}); 

// initialize scrollable together with the mousewheel plugin 
$("#wheeled").scrollable().mousewheel();


// make #myelement listen to mousewheel events 
$("#myelement").wheel(function(event, delta) { 
 
});