function showHideLevel3(level2Url, elemCount){
	  var elem = null;
	  elemCount++;
		for(var i = 1; i < elemCount; i++){
				var str = "level3" + level2Url + "SN" + i;
				var elem = document.getElementById("level3" + level2Url + "SN" + i);
				if(elem != null) {
					var style = elem.style.display;
					if(elem.style.display == 'block') elem.style.display = 'none';
					//elem.setAttribute('style', 'visibility:hidden');
					//else elem.setAttribute('style', 'visibility:visible');
					else elem.style.display = 'block';
				}
		}	
}