function reverse(sWord) {
	var textout = ""
	for (i = sWord.length; i > -1; i--) {
        textout = textout + sWord.charAt(i);
    }
    return textout
}

function decode(encode) {

		var decode = ""
		var decoded_text = ""
		for (i=0;i<encode.length/2;i++) {
			decode = decode + encode.charAt(i)
			decode = decode + encode.charAt(encode.length-1-i)
		}
		decode = reverse(decode)
		var this_letter = new Array()
		var counter = 0
		for (i=0;i<encode.length;i=i+4) {
			counter ++
			this_letter[counter] = decode.charAt(i) + decode.charAt(i+1) + decode.charAt(i+2) + decode.charAt(i+3)
		}
		for (i=1;i<this_letter.length;i++) {
			decoded_text = decoded_text + String.fromCharCode(1234-this_letter[i]);
		}
		return decoded_text;

}