var prevSelOb; 
function toggleMenu(objID) {
if (!document.getElementById) return;
var ob = document.getElementById(objID).style;
if (prevSelOb == null) {
	prevSelOb = ob ;
}

//	prevSelOb.display = 'none'		// Disabled
	ob.display = (ob.display == 'block')?'none': 'block';
	prevSelOb = ob ;
}