var autoClose=1;
var oldObject=null;

function toggleClamShellMenu(objectID) {
	if ((oldObject)&&(autoClose==1)) oldObject.style.display='none'
	var object = document.getElementById(objectID);
	if (object.style.display =='block')  object.style.display='none';
	else object.style.display='block';
	oldObject = object;
	return;
}