There are 4 previous versions of this script.
// ==UserScript==
// @version 2
// @name Orkut community thread Quick Replys
// @author http://www.orkut.com/Profile.aspx?uid=15963659674315462805
// @namespace
// @description Adds a quick reply text box to community threads on orkut
// @include http://*orkut*/CommMsgs*
// ==/UserScript==
function addForm()
{
var vURL = window.location.href;
var cmm = vURL.match(/cmm=[0-9]+/g);
var tid = vURL.match(/tid=[0-9]+/g);
var postToken = document.body.innerHTML.match(/<input.*"POST_TOKEN".*<input.*"signature".*>/g);
var hiddeninputs = postToken[0];
var colorarray= new Array("aqua","blue","fuchsia","gold","gray","green","lime","maroon","navy","olive","orange","pink","purple","red","silver","teal","violet","yellow");
var crappy = "";
for(var i=0;i<colorarray.length;i++)
{
crappy += "craptext=craptext.replace(/([[]){1}("+
colorarray[i]+"]){1}/gi,'<font color=\""+colorarray[i]+"\">');"+
"craptext=craptext.replace(/([[]\\/){1}("+
colorarray[i]+"]){1}/gi,'</font>');";
}
var p = document.getElementById("mboxfull");
var f = document.createElement("div");
f.innerHTML = '<script>'+
"function hidepreview(){"+
"var gultuu = document.getElementById('pc_0');"+
"gultuu.style.display = 'none';"+
"}"+
"function ppreview(){"+
"var gultuu = document.getElementById('pc_0');"+
"gultuu.style.display = 'inline';"+
"var gultus = document.getElementById('preview_0');"+
"var craptext = document.getElementsByTagName('textarea')[0].value;"+
"craptext=craptext.replace(/\\n/g,'<br/>');"+
"craptext=craptext.replace(/([[]){1}(b]){1}/gi,'<b>');"+
"craptext=craptext.replace(/([[]\\/){1}(b]){1}/gi,'</b>');"+
"craptext=craptext.replace(/([[]){1}(i]){1}/gi,'<i>');"+
"craptext=craptext.replace(/([[]\\/){1}(i]){1}/gi,'</i>');"+
"craptext=craptext.replace(/([[]){1}(u]){1}/gi,'<u>');"+
"craptext=craptext.replace(/([[]\\/){1}(u]){1}/gi,'</u>');"+crappy+
"craptext=craptext.replace(/([[]){1}(:\\(]){1}/gi,'<img src=\"http://img4.orkut.com/img/i_sad.gif\"/>');"+
"craptext=craptext.replace(/([[]){1}(8\\)]){1}/gi,'<img src=\"http://img3.orkut.com/img/i_cool.gif\"/>');"+
"craptext=craptext.replace(/([[]){1}(:x]){1}/gi,'<img src=\"http://img2.orkut.com/img/i_angry.gif\"/>');"+
"craptext=craptext.replace(/([[]){1}(:\\)]){1}/gi,'<img src=\"http://img1.orkut.com/img/i_smile.gif\"/>');"+
"craptext=craptext.replace(/([[]){1}(;\\)]){1}/gi,'<img src=\"http://img1.orkut.com/img/i_wink.gif\"/>');"+
"craptext=craptext.replace(/([[]){1}(:d]){1}/gi,'<img src=\"http://img1.orkut.com/img/i_bigsmile.gif\"/>');"+
"craptext=craptext.replace(/([[]){1}(:o]){1}/gi,'<img src=\"http://img1.orkut.com/img/i_surprise.gif\"/>');"+
"craptext=craptext.replace(/([[]){1}(:p]){1}/gi,'<img src=\"http://img3.orkut.com/img/i_funny.gif\"/>');"+
"craptext=craptext.replace(/([[]){1}(\\/\\)]){1}/gi,'<img src=\"http://img4.orkut.com/img/i_confuse.gif\"/>');"+
"gultus.innerHTML = craptext;"+
"}"+
'</script>'+
'<table cellpadding="0" cellspacing="0" border="0" class="module" style="width: 100%">'+
'<tr><td class="topl"></td><td class="topr" ></td></tr>'+
'<tr><td class="boxmid">'+
'<h2>Quick Reply</h2><form method="post" action="http://www.orkut.co.in/Main#CommMsgPost?'+cmm+'&'+tid+'" onsubmit="isValid">'+hiddeninputs+
'<div class="listlight"><div class="listfl">Subject:</div>'+
'<div class="listp"><input id="subject" name="subjectText" maxlength="50" size="50" value="" type="text"></div></div>'+
'<div class="listdark"><div class="listfl">Message:</div>'+
'<div class="listp"><textarea id="messageBody" name="bodyText" cols="30" rows="5" style="width: 500px;"></textarea></div></div>'+
'<div class="listdivi"></div><div class="listdivi ln"></div>'+
'<div class="parabtns">'+
'<span class="grabtn"><a href="javascript:void(0);" onclick="document.getElementById(\'gullet\').click();" class="btn">submit</a></span><span class="btnboxr"><img src="http://img1.orkut.com/img/b.gif" alt="" height="1" width="5"></span>'+
'<span class="grabtn"><a href="javascript:void(0);" onclick="ppreview()" class="btn">preview</a></span><span class="btnboxr"><img src="http://img1.orkut.com/img/b.gif" alt="" height="1" width="5"></span>'+
'<span class="grabtn"><a href="javascript:void(0);" onclick="alert(document.body.innerHTML);_openTips()" class="btn">Formatting Tips</a></span><span class="btnboxr"><img src="http://img1.orkut.com/img/b.gif" alt="" height="1" width="5"></span>'+
'</div>'+
'<input type="submit" id="gullet" name="Action.submit" style="display:none;"/></form>'+
'<div id="pc_0" style="display:none;"><h2>Preview</h2>'+
'<div id ="preview_0" style="padding: 2px; background-color: EFF7FF; width: 800px;"></div><a href="javascript:void(0)" onclick="hidepreview();">hide preview</a></div>'+
'</td><td class="boxmidr" ></td></tr>'+
'<tr><td class="botl"></td><td class="botr"></td></tr></table>';
p.appendChild(f);
}
//addEventListener('load', addForm, false);
addForm();
