var _cE = window.CustomEvent || null;
var triggerCustomEvent = function(el, evName, obj) {
var ev;
if (_cE) {
ev = new CustomEvent(evName, {
detail: obj
});
}
else {
ev = document.createEvent('CustomEvent');
ev.initCustomEvent(evName, true, true, obj);
}
el.dispatchEvent(ev);
};