var EventUtil = { addHandler: function (element, type, handler) { if (element.addEventListener) { element.addEventListener(type, handler, false); } else if (element.attachEvent) { element.attachEvent('on' + type, handler); } else { element['on' + type] = handler; } }, removeHandler: function (element, type, handler) { if (element.removeEventListener) { element.removeEventListener(type, handler, false); } else if (element.detachEvent) { element.detachEvent('on' + type, handler); } else { element['on' + type] = null; } }, getEvent: function (event) { return event ? event: window.event; }, getTarget: function (event) { return event.target || event.srcElement; }, preventDefault: function (event) { if (event.preventDefault) { event.preventDefault(); } else { event.returnValue = false; } } }