var objID1 = '';
var objID2 = '';

function toggleMenu(objID1)
{
if (!document.getElementById) return;
if (objID2 == objID1 || objID2 == "" ) {
	var ob = document.getElementById(objID1).style;
	ob.display = (ob.display == 'block')?'none': 'block';
	 if (objID2 == objID1) objID2 = ''; else objID2 = objID1;
} else {
	var ob = document.getElementById(objID2).style;
	ob.display = (ob.display == 'block')?'none': 'block';
	var ob = document.getElementById(objID1).style;
	ob.display = (ob.display == 'block')?'none': 'block';
	objID2 = objID1;
}
}