function allChange(check){
	var index;
	if(check){
                document.form.check.checked = true;
		for(index = 0; index < document.form.check.length; index++){
			document.form.check[index].checked = true;
		}
	}else{
                document.form.check.checked = false;
		for(index = 0; index < document.form.check.length; index++){
			document.form.check[index].checked = false;
		}
	}
}