function Text()
{
}

Text.decryptDocument = function()
{
    var tags = document.getElementsByTagName("SPAN");
    for (var tag, i = 0, ix = tags.length; i < ix; ++i) {
	tag = tags[i];
	if (tag.className.match(/\bencrypted\b/)) {		
	    tag.innerHTML = Text.decrypt(tag.innerHTML);
	    tag.className = tag.className.replace(/\bencrypted\b/, ""); 
	}
    }
}

Text.encrypt = function(plainText)
{
    var encryptedText = [];
    for (var i = plainText.length - 1; i >= 0; --i) {
	encryptedText.push(plainText.charCodeAt(i));
    }
    return encryptedText.join("-");
}

Text.decrypt = function(cryptText) 
{
    cryptText = cryptText.split("-");
    plainText = "";
    for (var i = cryptText.length - 1; i >= 0; --i) {
	plainText += String.fromCharCode(cryptText[i]);
    }
    return plainText;
}