var global_menu=false;

function menu(src,e) {
	
	var menu = src;
	var submenu = menu.rows[1];
	var seta = menu.rows[0].cells[0].firstChild;
	var tr = getRow(e);
	
	if(tr == menu.rows[0]){
		if(submenu.className=='submenu'){
			submenu.className='submenub';
			if(global_menu){
				global_menu.rows[1].className='submenu';
			}
			global_menu = menu;
		} else {
			submenu.className='submenu';
			global_menu = false;
		}
	}
}

function getRow(e) {
	var msie = /msie/i.test(navigator.userAgent);
	var el = e.target || e.srcElement;
	while (el.tagName == "TD")
		el = el.parentNode;

	return el;
}