1 var EventUtil = {
2 addHandler: function (element, type, handler) {
3 if (element.addEventListener) {
4 element.addEventListener(type, handler, false);
5 } else if (element.attachEvent) {
6 element.attachEvent("on" + type, handler);
7 } else {
8 element["on" + type] = handler;
9 }
10 },
11 removeHandler: function (element, type, handler) {
12 if (element.removeEventListener) {
13 element.removeEventListener(type, handler, false);
14 } else if (element.detachEvent) {
15 element.detachEvent("on" + type, handler);
16 } else {
17 element["on" + type] = null;
18 }
19 },
20
21 getEvent: function (event) {
22 return event ? event : window.event;
23 },
24 getTarget: function (event) {
25 return event.target || event.srcElement;
26 },
27 preventDefault: function (event) {
28 if (event.preventDefault) {
29 event.preventDefault();
30 } else {
31 event.returnValue = false;
32 }
33 },
34 stopPropagation: function (event) {
35 if (event.stopPropagation) {
36 event.stopPropagation();
37 } else {
38 event.cancelBubbles = true;
39 }
40 },
41 getRelatedTarget: function (event) {
42 if (event.relatedTarger) {
43 return event.relatedTarget;
44 } else if (event.toElement) {
45 return event.toElement;
46 } else if (event.fromElement) {
47 return event.fromElement;
48 } else { return null; }
49
50 }
51
52 }
