function setMenu(id)
{
	var showRow = (navigator.appName.indexOf("Internet Explorer") != -1) ? "block" : "table-row";
	var menu = document.getElementById(id);

	if (menu!=null)
	{
		menu.style.display = showRow;
	}

}

function openSubmenu(id)
{
	var showRow = (navigator.appName.indexOf("Internet Explorer") != -1) ? "block" : "table-cell";
	var menu = document.getElementById('submenu'+id);

	// sluit alle submenus
	var objs = document.getElementsByTagName('TD');


	for(var i=0;i<objs.length;i++)
	{
		if (objs[i].className=='sub_menu')
		{
			objs[i].style.display = 'none';
		}
	}

	if (menu!=null)
	{
		menu.style.display = showRow;
	}

	return false;

}