Mouse wheel event scroll

scroll.js

function wheel(event){
    var delta = 0;
    event.preventDefault();
    
    if(window.event.wheelDelta > 0){
        $('.right_arrow').trigger('click');
    }
    else{
        $('.left_arrow').trigger('click');
    }    
}

$('.PartyPlannerSlide').on('mousewheel', wheel);