var Url = {
	// public method for URL encoding
	encode : function (string) { return escape(this._utf8_encode(string)); },
	// public method for URL decoding
	decode : function (string) { return this._utf8_decode(unescape(string)); },
	// private method for UTF-8 encoding
	_utf8_encode : function (string) {
			string = string.replace(/\r\n/g,"\n");
			var utftext = "";
			for (var n = 0; n < string.length; n++)
			{
				var c = string.charCodeAt(n);
				if (c < 128)
				{
					utftext += String.fromCharCode(c);
				}
				else if((c > 127) && (c < 2048))
				{
					utftext += String.fromCharCode((c >> 6) | 192);
					utftext += String.fromCharCode((c & 63) | 128);
				}
				else
				{
					utftext += String.fromCharCode((c >> 12) | 224);
					utftext += String.fromCharCode(((c >> 6) & 63) | 128);
					utftext += String.fromCharCode((c & 63) | 128);
				}
			}

		return utftext;
	},
	// private method for UTF-8 decoding
	_utf8_decode : function (utftext) {
		var string = "";
		var i = 0;
		var c = c1 = c2 = 0;

		while ( i < utftext.length )
		{
			c = utftext.charCodeAt(i);
			if (c < 128)
			{
				string += String.fromCharCode(c);
				i++;
			}
			else if((c > 191) && (c < 224))
			{
				c2 = utftext.charCodeAt(i+1);
				string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
				i += 2;
			}
			else
			{
				c2 = utftext.charCodeAt(i+1);
				c3 = utftext.charCodeAt(i+2);
				string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
				i += 3;
			}
		}
	return string;
	}
}