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"use strict";
var textNodeType;
function textContent(n) {
if ( n.nodeType == textNodeType ) {
return n.data;
} else {
var children = n.childNodes;
var t = "";
for ( var i=0 ; i<children.length ; i++ ) {
t = t.concat(textContent(children.item(i)));
}
return t;
}
}
function despam() {
// MSIE seems to barf... Deactivate for now
if ( (/MSIE *[1-6]\./).test(navigator.userAgent) )
return;
// Now replace as appropriate.
var elts = document.getElementsByTagName("span");
for ( var i=0 ; i<elts.length ; i++ ) {
var elt = elts.item(i);
if ( elt.className == "replace-commercial-at" ) {
elt.parentNode.replaceChild(document.createTextNode("@"),elt);
i--; // Semi-bugware
} else if ( elt.className == "replace-full-stop" ) {
elt.parentNode.replaceChild(document.createTextNode("."),elt);
i--; // Semi-bugware
}
}
// Merge adjacent text nodes.
try {
document.normalize(); // Your DOM is BROKEN!
} catch (exn) {
document.documentElement.normalize();
}
// Next, process all <a> elements having class="despammed-address".
elts = document.getElementsByTagName("a");
for ( var i=0 ; i<elts.length ; i++ ) {
var elt = elts.item(i);
if ( elt.className == "despammed-address" ) {
var addr = "mailto:".concat(textContent(elt));
elt.setAttribute("href",addr); // (abstract)
elt.href = addr; // (semantic)
}
}
}
function permuteWord(s) {
if ( s.length <= 3 )
return s;
var tab = s.split("");
var n = tab.length - 1;
for ( var i=1 ; i<n ; i++ ) {
var j = i + Math.floor(Math.random()*(n-i));
if ( j == i )
continue;
var tmp = tab[j];
tab[j] = tab[i];
tab[i] = tmp;
}
return tab.join("");
}
function permuteString(s) {
return s.replace(/[A-Za-zÀ-ÿ]+/g, permuteWord);
}
function permuteDoc(doc) {
var body = doc.body;
var walker = doc.createTreeWalker(body, NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_TEXT, null, false);
var node = walker.nextNode();
while ( node ) {
if ( node.nodeType == Node.TEXT_NODE ) {
var thisnode = node;
node = walker.nextNode();
var str = permuteString(thisnode.nodeValue);
thisnode.parentNode.replaceChild(doc.createTextNode(str), thisnode);
} else if ( node.nodeType == Node.ELEMENT_NODE
&& ( node.localName == "pre"
|| node.localName == "code"
|| node.localName == "script"
|| node.localName == "style" ) ) {
do {
node = walker.nextSibling();
if ( node )
break;
node = walker.parentNode();
if ( ! node )
break;
} while ( true );
} else
node = walker.nextNode();
}
}
function aprilsFool() {
var today = new Date();
if ( today.getMonth() == 3 && today.getDate() == 1 )
permuteDoc(window.document);
}
function onLoad() {
// Start with some bugware...
try {
textNodeType = Node.TEXT_NODE;
} catch (exn) { // Your DOM is BROKEN!
textNodeType = 3;
}
// Now despam email adresses.
despam();
aprilsFool();
}
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