function CheckAll(val) {
$("input[name='chkJob']").each(function() {
this.checked = val;
});
$("#chkAll").attr("checked", val);//設定全選按鈕狀態
}

//全選
function checkall() {
var all = document.getElementsByTagName("input");
for (var i = 0; i < all.length; i++) {
if (all[i].type == "checkbox") {
all[i].checked = true;
}
}
}
//反選
function checknull() {
var all = document.getElementsByTagName("input");
for (var i = 0; i < all.length; i++) {
if (all[i].type == "checkbox") {
all[i].checked = false;
}
}
}