var timer, i, menuId;
//document.getElementById('town_17').style.visibility = visible;

		var dom = document.getElementById ? true : false;
		var ie4 = ((document.all) && (!dom)) ? true : false;
		var ns4 = document.layers ? true : false;
		var opera = navigator.userAgent.indexOf('Opera') != -1 ? true : false;
		var dhtml = dom ? true : ie4 ? true : ns4 ? true : false;
		function setVisibility(element,newVisibility)
		{ 
			if (dhtml)
			{
				element = 'town_'+element;

				if (dom) document.getElementById(element).style.visibility = newVisibility;
				else if (ie4) document.all[element].style.visibility = newVisibility;
				else if (ns4) eval('document.' + element + '.visibility = newVisibility');
			}
		}
		function showMenu(id)
		{ 
			if (dhtml)
			{
				if (menuId) setVisibility(menuId,'hidden');
				clearTimeout(timer);
				setVisibility((ns4 ? 'menuHolder.document.' : '') + id,'visible');
				menuId = id;
				
			}
		}
		
		function hideMenu(id)
		{
			menuId = id;
			if (dhtml)
			{
//				menuId = (ns4 ? 'menuHolder.document.' : '') + 'hiddenMenu' + id;
				timer = setTimeout("setVisibility(menuId,'hidden')",1000);
//				document.getElementById('town_'+id).style.visibility = 'hidden';
			}
		}
		
		function dontHideMenu()
		{
			if (dhtml) clearTimeout(timer);
		}