function VN_cColor(elm,n){
	switch(n){
		case 1:
			elm.style.backgroundColor = '#E9E9D1';
			elm.style.cursor = 'hand';
			break;
		case 2:
			elm.style.backgroundColor = '#FFDFBB';
			elm.style.cursor = 'hand';
			break;
		case 3:
			elm.style.backgroundColor = '#EEEEEE';
			break;
		case 4:
			elm.style.backgroundColor = '#DEBE9E';
			break;
	}
}

function VN_rColor(elm){
	elm.style.backgroundColor = '';
}