function SearchClassCheckALL() {
	for (var j = 1; j <= 5; j++) {
		box = eval("document.getElementById('class'+j)");
		if (document.getElementById('class0').checked == true) {
			if (box.checked == true) box.checked = false;
		}
	}
}function SearchClassUnCheckALL() {
		if (document.getElementById('class0').checked == true) {
			 document.getElementById('class0').checked = false;
		}
}