行间点击事件如何阻止冒泡

function funJiangFa(getStr) {
var ev = window.event;
//e.stopPropagation();
$("#alertBox1").show();
$("#ifm").attr('src', 'DaiShenPi_GuWen_JiangFa.aspx?getStr=' + getStr);
$(".alert_box_head h3").text('新增奖罚');
alertThreeShow($("#alertBox1"));
$("#mask2").addClass('noLoad');
stopEventBubble(ev);
}

function stopEventBubble(event) {
var e = event || window.event;

if (e && e.stopPropagation) {
e.stopPropagation();
}
else {
e.cancelBubble = true;
}
}