<!--
var checkflag = "false";
function check(field) {
	if (checkflag == "false") {
		for (i = 0; i < field.length; i++) {
		field[i].checked = true;}
		checkflag = "true";
		return "Clear"; }
	else {
		for (i = 0; i < field.length; i++) {
		field[i].checked = false; }
		checkflag = "false";
		return "All"; }
}
//-->