if(ename == "mousewheel" && el.addEventListener){ // workaround for jQuery
el.addEventListener("DOMMouseScroll", h, false);
E.on(window, 'unload', function(){
if(ename == "mousewheel" && el.addEventListener){ // workaround for jQuery
el.addEventListener("DOMMouseScroll", h, false);
E.on(window, 'unload', function(){