function ShowHide(id) {
	obj = document.getElementsByTagName('div');
    if(obj[id].style.visibility == 'visible') {
		obj[id].style.visibility = 'hidden';
		obj[id].style.display = 'none';
    } else {
		obj[id].style.visibility = 'visible';
		obj[id].style.display = 'block';
    }
};

function SubmitSort() {
	document.getElementById('how2list').submit();
};