initial plurk delete greasemonkey script import

deleteplurks.user.js

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+//
+// Delete Plurks                               v1.0  2009.11.29
+//
+// A greasemonkey script by Peteris Krumins (peter@catonmat.net)
+// http://www.catonmat.net  --  good coders code, great reuse
+//
+// --------------------------------------------------------------------
+//
+// This is a Greasemonkey user script.
+//
+// To install, you need Greasemonkey:
+// https://addons.mozilla.org/en-US/firefox/addon/748
+//
+// --------------------------------------------------------------------
+//
+// ==UserScript==
+// @name          Delete Plurks
+// @namespace     http://www.catonmat.net
+// @description   Adds a button to delete plurks on individual plurk page.
+// @include       http://www.plurk.com/p/*
+// ==/UserScript==
+
+(function() {
+
+function xpath(query) {
+    var elems = document.evaluate(query, document, null,
+                XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
+    var ret = [];
+    for (var i = 0; i < elems.snapshotLength; i++) {
+        ret.push(elems.snapshotItem(i));
+    }
+    return ret;
+}
+
+function xpath_map(query, fn) {
+    var elements = xpath(query);
+    for (var i = 0; i < elements.length; i++) {
+        fn(elements[i]);
+    }
+}
+
+function delete_plurk(plurk_id, id, li)
+{
+    var url = 'http://www.plurk.com/Responses/deleteResponse';
+    var data = 'plurk_id=' + plurk_id + '&id=' + id;
+    GM_xmlhttpRequest({
+        method: 'POST',
+        url: url,
+        data: data,
+        headers: {
+            Referer: 'http://www.plurk.com',
+            'Content-type': 'application/x-www-form-urlencoded'
+        },
+        onload: function(response) {
+            li.style.display = "none";
+        }
+    });
+}
+
+function element_str(query, filter) {
+    try {
+        str = xpath(query)[0].textContent;
+        if (str) {
+            return filter(str);
+        }
+    }catch(e){}    
+}
+
+function get_my_nick() {
+    return element_str('//a[@id="login_link"]',
+            function(str){
+                return str.match(/Sign out \[(.+)\]/)[1].toLowerCase();
+            });
+}
+
+function get_owner_nick() {
+    return element_str("//a[@class='user-nick']",
+            function(str){
+                return str.toLowerCase();
+            });
+}
+
+var my_nick    = get_my_nick();
+var owner_nick = get_owner_nick();
+
+var plurk_id_36 = document.location.href.match(/\/p\/(.+)/)[1];
+var plurk_id    = parseInt(plurk_id_36, 36);
+
+xpath_map("//li[contains(@id, 'response')]",
+    function(li) {
+        var id = li.id.match(/\d+/);
+        var div = li.childNodes[3];
+        var nick = div.childNodes[3].textContent.toLowerCase();
+
+        if (owner_nick == my_nick || nick == my_nick) {
+            var a = document.createElement('a');
+            a.href='#delete';
+            a.innerHTML = "delete";
+            a.addEventListener('click', function(evt) {
+                delete_plurk(plurk_id, id, li);
+            }, false);
+            div.appendChild(a);
+        }
+    });
+})();
+

readme.txt

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+This is a GreaseMonkey script that adds a "delete" button on individual plurk
+page. This way you can delete your or other people plurks (if it's your
+thread) from the plurk page itself.
+
+This script was written by Peteris Krumins (peter@catonmat.net).
+His blog is at http://www.catonmat.net  --  good coders code, great reuse.
+
+His profile at Plurk is at http://plurk.com/pkrumins - come be his friend! :)
+
+The code is licensed under the MIT license.
+
+------------------------------------------------------------------------------
+
+How to install this script?
+---------------------------
+
+You will need FireFox browser and GreaseMonkey plugin. If you have them,
+please proceed to step 3. Otherwise also do steps 1 and 2. 
+
+Step 1. Download and install FireFox browser. It can be downloaded at the
+following address: http://www.mozilla.com/firefox/
+
+Step 2. Install GreaseMonkey FireFox addon. GreaseMonkey allows you to modify
+any page (like this one adds translation feature to Plurk's page). GreaseMonkey
+can be downloaded here: https://addons.mozilla.org/en-US/firefox/addon/748
+
+Step 3. Install this script. The latest version is always at GreaseMonkey
+script repostiory:
+
+    http://userscripts.org/scripts/source/63085.user.js
+
+Open this link with FireFox and click "Install".
+
+Now you can delete plurks from the individual plurk page. (By individual plurk
+page I mean plurks with URL http://www.plurk.com/p/<something>).
+
+The script will add "delete" button next to your own plurks.
+
+The script will add "delete" button to all the plurks if you are the owner of
+the thread (the original plurk).
+
+------------------------------------------------------------------------------
+
+And yeah, follow me on Plurk: http://plurk.com/pkrumins
+
+
+Sincerely,
+Peteris Krumins
+http://www.catonmat.net
+