//window.onload=hideMenus(''); 
function hideDropMenus() { 
	// clear all menu drop downs
	for (var i = 1; i<=8; i++) {
		if (document.getElementById('smenu'+i)) {
			document.getElementById('smenu'+i).style.display='none';
		}
	} 
}
function showDropMenu(id) {
    var d = document.getElementById(id);
	hideDropMenus(); //to make sure we only display 1 menu at a time
	// now display just this drop down (if any)
	if (d) {
		d.style.display='block';
	}
}