var subTimeout = new Array();

function subIn(no) {
	document.getElementById('main_0'+no).className = document.getElementById('main_0'+no).className + ' over';
	document.getElementById('sub_0'+no).style.visibility = 'visible';
	window.clearTimeout(subTimeout[no]); 
}

function subOut(no) {
	subTimeout[no] = window.setTimeout("subHide("+no+");", 100);
}
		
function subHide(no) {
	if (no < 3) {
		boxClass = 'mainbox';
	} else {
		boxClass = 'cltbox';
	}
	document.getElementById('main_0'+no).className = boxClass;
	document.getElementById('sub_0'+no).style.visibility = 'hidden';
}