how to send ajax put request from jQuery

[setu]

I want to write back to my google spreadsheet after authorizing user. 
Authorizing is complete. But, to write back to spreadsheet, I have send PUT 
request as stated 
here<http://code.google.com/apis/spreadsheets/data/3.0/developers_guide.html#UpdatingCells>.
 
It is from iGoogle Gadget.

My XML element is : 

    var cellUrl = "https://spreadsheets.google.com/feeds/cells/"; + key + 
"/od6/private/full/R2C2";
    var XMLData = "<entry xmlns='http://www.w3.org/2005/Atom' 
xmlns:gs='http://schemas.google.com/spreadsheets/2006'>" + 
                    "<id>" + cellUrl + "</id><link rel='edit' 
type='application/atom+xml' href='" + cellUrl + "'/>" + 
                    "<gs:cell row='2' col='2' inputValue='300'/>" + 
                "</entry>";

I am sending AJAX request as : 

    $.ajax({
                    url: cellUrl,
                    type: "PUT",
                    contentType: 'application/atom+xml',
                    processData: false,
                    data: XMLData,
                    error: function(XMLHttpRequest, textStatus, 
errorThrown){
                        alert(errorThrown);
                    }, success: function(data, textStatus, XMLHttpRequest){
                        alert("Succeeded");
                    }
                });

It is showing me error : 

OAuth error: undefined: ==== Original request: PUT 
/feeds/cells/0Aq69FHX3TV4ndDBDVFFETUFhamc5S25rdkNoRkd4WXc/od6/private/full/R6C6 
Host: spreadsheets.google.com X-Shindig-AuthType: oauth X-Forwarded-For: 
121.243.28.42 X-shindig-dos: on ==== ==== Sent request 1: PUT 
/feeds/cells/0Aq69FHX3TV4ndDBDVFFETUFhamc5S25rdkNoRkd4WXc/od6/private/full/R6C6 
Host: spreadsheets.google.com X-Shindig-AuthType: oauth Authorization: OAuth 
oauth_body_hash="2jmj7l5rSw0yVb%2FvlWAYkK%2FYBwk%3D", 
opensocial_owner_id="110501559172399061294", 
opensocial_viewer_id="110501559172399061294", 
opensocial_app_id="105457509408870268642", 
opensocial_app_url="http%3A%2F%2Fhosting.gmodules.com%2Fig%2Fgadgets%2Ffile%2F112285678925209781527%2Fg1.xml",
 
xoauth_signature_publickey="pub.1210278512.2713152949996518384.cer", 
xoauth_public_key="pub.1210278512.2713152949996518384.cer", 
oauth_version="1.0", oauth_timestamp="1295855527", 
oauth_nonce="7702046626580960959", 
opensocial_container="http%3A%2F%2Fwww.google.com%2Fig", 
oauth_token="1%2FEns5kIMBSws15fiatbQ_auH11bq2epY7iHnicnmmffo", 
oauth_consumer_key="www.google.com", oauth_signature_method="RSA-SHA1", 
oauth_signature="bJMD5iPj9NRhCaH30p%2FfX3AZk1GWBU6BcTZeZIwLLgTZB09LhxOmsh8Dax%2BUEUMJpEp8lZ7fVvePq5qDc2XJmFVGsau9DXrDM2RJ66HuYS7pQINRGK%2FUxoGGtXCEQMaz7eSmjNxqasRZQkNRo5qx2M7aeCB7qmBFM3D0YbB6wTM%3D"
 
X-Forwarded-For: 121.243.28.42 X-shindig-dos: on ==== Received response 1: 
HTTP/1.1 415 Cache-Control: private, max-age=0 Content-Type: text/html; 
charset=UTF-8 Date: Mon, 24 Jan 2011 07:52:07 GMT Expires: Mon, 24 Jan 2011 
07:52:07 GMT Server: GSE Via: HTTP/1.1 GWA X-Content-Type-Options: nosniff 
X-Frame-Options: SAMEORIGIN X-Google-Cache-Control: remote-fetch 
X-XSS-Protection: 1; mode=block Content-Type 
application/x-www-form-urlencoded;charset=utf-8 is not a valid input type. 
====

I have hidden cellURL key for security. And it is similar to the key in my 
spreadsheet url.