function debug(obj)
{
	alert((typeof obj) + " " + serialize(obj));
}


function debug_r(arr)
{
	var str = '';
	for (el in arr)
	{
		str += el + " => (" + typeof(arr[el]) + ") " + arr[el] + "     ";
	}
	alert(str);
}


// @todo add addslashes() to case 'string' 
function serialize(obj)
{
	switch (typeof obj)
	{
		case 'string':
			return "'" + obj + "'";
		case 'number':
		case 'boolean':
			return String(obj);
		case 'object':
			if (obj === null)
			{
				return 'null';
			}
			var result = "{";
			for (var key in obj)
			{
				if (typeof obj[key] != 'function')
				{
					if (result != "{")
					{
						result += ", ";
					}
					result += key + ": " + serialize(obj[key]);
				}
			}
			result += "}";
			return result;
		default:
			return typeof obj;
	}
}