function selectAllCheckboxByForm(form) {
	for (var i=0; i<form.elements.length; i = i + 1) {
		var elem = form.elements[i];
		if (elem.type == "checkbox") { 
			elem.checked = true;
		}
	}
}

function deselectAllCheckboxByForm(form){
	for (var i=0; i<form.elements.length; i = i + 1){
		var elem = form.elements[i];
		if (elem.type == "checkbox"){ 
			elem.checked = false;
		}
	}
}

function selectAllCheckboxByName(checkboxName) {
	var checkbox = document.getElementsByName(checkboxName);
	for (var i=0; i<checkbox.length; i = i + 1) {
		if (checkbox[i].type == "checkbox") { 
			checkbox[i].checked = true;
		}
	}
}

function deselectAllCheckboxByName(checkboxName){
	var checkbox = document.getElementsByName(checkboxName);
	for (var i=0; i<checkbox.length; i = i + 1) {
		if (checkbox[i].type == "checkbox") { 
			checkbox[i].checked = false;
		}
	}
}

function enableAllCheckboxByName(checkboxName) {
	var checkbox = document.getElementsByName(checkboxName);
	for (var i=0; i<checkbox.length; i = i + 1) {
		if (checkbox[i].type == "checkbox") { 
			checkbox[i].disabled = false;
		}
	}
}

function disableAllCheckboxByName(checkboxName) {
	var checkbox = document.getElementsByName(checkboxName);
	for (var i=0; i<checkbox.length; i = i + 1) {
		if (checkbox[i].type == "checkbox") { 
			checkbox[i].disabled = true;
		}
	}
}

function collectCheckedbox(checkboxName, textFieldName){
	document.getElementById(textFieldName).value = "";
	var tmp = "";
	var checkbox = document.getElementsByName(checkboxName);
	for (var i = 0; i < checkbox.length; i = i + 1) {
		if (checkbox[i].checked == true) {
			if(tmp != ""){
				tmp = tmp + ",";
			} 
			tmp = tmp + checkbox[i].value;
		}
	}
	document.getElementById(textFieldName).value = tmp;
}

function tickCheckboxByValue(checkboxName, value){
	var checkbox = document.getElementsByName(checkboxName);
	for (var i=0; i< checkbox.length; i = i + 1) {
		if (checkbox[i].type == "checkbox") {
			if(checkbox[i].value == value){ 
				checkbox[i].checked = true;
			}
		}
	}
}

function check_controller(checkboxName){
	if(event.srcElement.checked == true){
		selectAllCheckboxByName(checkboxName);
	}else{
		deselectAllCheckboxByName(checkboxName);
	}
}