function ShowMenu(type) {
	var c_sub1 = document.getElementById('c_sub1');
	var c_sub2 = document.getElementById('c_sub2');
	var r_sub1 = document.getElementById('r_sub1');
	var r_sub2 = document.getElementById('r_sub2');

	if(type == 'c') {
		if(c_sub1.style.display == 'block') {
			c_sub1.style.display = 'none';
			c_sub2.style.display = 'none';
		}
		else {
			c_sub1.style.display = 'block';
			c_sub2.style.display = 'block';
		}
	}
	else if(type == 'r') {
		if(r_sub1.style.display == 'block') {
			r_sub1.style.display = 'none';
			r_sub2.style.display = 'none';
		}
		else {
			r_sub1.style.display = 'block';
			r_sub2.style.display = 'block';
		}
	}
}