UpdatePanel和jQuery不兼容 局部刷新jquery失效

//处理ajax和ScriptManager的冲突
function load() {
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
}
function EndRequestHandler() {
$(function () {
$("tbody").find("input:checkbox").each(function (key, val) {
$(val).click(function () {
var cbxId = $(this).attr("id");
var state = $(this).attr("checked");
$.post("Ajax/UpdateStatus.ashx", { "id": cbxId, "isChecked": state, "fid": "SamID" }, isReturnStatus);
});
});
$("thead").find("input:checkbox").click(
function () {
if (confirm("确定要更新这一列数据吗？") == true) {
var cbxId = $(this).attr("id");

var name = cbxId.substr(16);
var v = "tbody ." + name + " input[type='checkbox']";
if ($(this).attr("checked") == "checked") {
$(v).attr("checked", true);
}
else {
$(v).attr("checked", false);
}

var state = $(this).attr("checked");
$.post("Ajax/UpdateStatus.ashx", { "id": cbxId, "isChecked": state }, isReturnStatus);
}
else {
if ($(this).attr("checked") == "checked") {
$(this).attr("checked", false);
}
else {
$(this).attr("checked", true);
}
}
});

});
initCheckedStaus();
}