opagation) {
var preventDefault = isUndefined(preventDefault) ? 1 : preventDefault;
var stopPropagation = isUndefined(stopPropagation) ? 1 : stopPropagation;
e = event ? event : window.event;
if(!e) {
e = getEvent();
}
if(!e) {
return null;
}
if(preventDefault) {
if(e.preventDefault) {
e.preventDefault();
} else {
e.returnValue = false;
}
}
if(stopPropagation) {
if(e.stopPropagation) {
e.stopPropagation();
} else {
e.cancelBubble = true;
}
}
return e;
}
