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function checkAll(form) {
for (i = 0, n = form.elements.length; i < n; i++) {
if(form.elements[i].type == "checkbox" && !(form.elements[i].getAttribute('onclick',2))) {
if(form.elements[i].checked == true)
form.elements[i].checked = false;
else
form.elements[i].checked = true;
}
}
}
function getNumChecked(form) {
var num = 0;
for (i = 0, n = form.elements.length; i < n; i++) {
if (form.elements[i].type == "checkbox") {
if (form.elements[i].checked == true)
num++;
}
}
return num;
}
function checkAllUsers(role) {
var checkboxs = document.getElementsByTagName('input');
for(var i = 0, inp; inp = checkboxs[i]; i++)
if(inp.type.toLowerCase() == 'checkbox' && inp.className == role)
if(inp.checked == false)
inp.checked = true;
else
inp.checked = false;
}
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