var isIE = false;

if (document.all) isIE = true;

function showSub(elem) {
	elems = document.getElementById('basemenu').getElementsByTagName('table');
	submenu = document.getElementById('sub'+elem.id);
	for (var i = 0; i < elems.length; i++) {
		if (elems[i].id == submenu.id) {
			style = (isIE) ? 'inline' : 'table';
			elems[i].style.display = style;
		} else
			elems[i].style.display = 'none';
	}
}