Google Docs Upload problem

var GoogleDocs = {


    onLoad: function() {

       document.getElementById("contentAreaContextMenu")
       .addEventListener("popupshowing", function(event) { GoogleDocs.onPopupShowing(event); }, false);


    },


    onPopupShowing: function(event) {


       document.getElementById("context-Google-Docs")
       .hidden = document.getElementById("context-openlinkintab").getAttribute("hidden");
   },


 };


    function execute(event) {


     if(!gContextMenu.onLink)return;


     var url = gContextMenu.getLinkURL();


     // retrieve the url from a google link
     var googleURL = /^http:\/\/[a-z]+\.google\.[a-z]+\/url\?.*[\\?&]url=([^&#]+)/i;


     // special case for yahoo search results
     var yahooURL = /^http:\/\/[a-z]+\.yahoo\.[a-z]+\/.*\/\*\*([^&#]+)/i;


	   if(url.match(googleURL) || url.match(yahooURL)) { 

    		url = decodeURIComponent(RegExp.$1); 
	   }
        getToken(url)
        //openDoc(url); 
  }


     function openDoc(aURI) {


    var uploadURL = googleDocsURL + encodeURIComponent(aURI);


    var prefManager = Components.classes["@mozilla.org/preferences-service;1"]
                             .getService(Components.interfaces.nsIPrefBranch);


    var prefvalue = prefManager.getCharPref("sendtogoogledocs.whereToOpenUrl"); 


    switch(prefvalue) {


	   	case "openNewTab":
				gBrowser.addTab(uploadURL);
				break;

			case "selectedNewTab":
				gBrowser.selectedTab = gBrowser.addTab(uploadURL);
				break;

			case "openNewWindow":
				window.open(uploadURL);
				break;


      case "openSameTab":
				gBrowser.loadURI(uploadURL);
				break;
		 }	
   }      


    function getToken(aURL) {

  var xhr = new XMLHttpRequest();


  var email = ""; //zum testen


  var password = ""; //zum testen


  xhr.open("POST", "https://www.google.com/accounts/ClientLogin?accountType=HOSTED_OR_GOOGLE&Email="+email+"&Passwd="+password+"&service=writely&source=GoogleDocs", true);


  xhr.onreadystatechange = function(aEvent) {


    if(xhr.readyState == 4) {


      if(xhr.status == 200) {


    var a = xhr.responseText.replace(/\n/g, "");


    _AUTH = a.substr(a.indexOf("Auth=") + 5);


    sendDoc(_AUTH, aURL);


       } else { 
   alert(xhr.statusText)
    }
  }
 }
  xhr.send(null);


}


       // var pattern = /<input type="hidden" name="security_token" value="([^"]+)">/;


     //   var matches = xhr.responseText.match(pattern);


       // if(matches != null) { // retrieved security token successfully


         // sendDoc(matches[1], aURL);


     //   } else { // failed to retrieve security token - not logged in?


         // showAlert("Login Error", "Please login first!"); 


       //   gBrowser.selectedTab = gBrowser.addTab("https://docs.google.com");
      //    return;
      //  }
     // } else { // server error


      //  showAlert("Error", "Error getting token!"); 
      //  return;


   
    function sendDoc(aToken, aURL) { // http://code.google.com/intl/en/apis/desktop/articles/e9.html


  var xhr = new XMLHttpRequest();


  xhr.open("POST", "http://docs.google.com/feeds/documents/private/full");


  //document.getElementById("upload_txt").style.display = "";
    //    document.getElementById("upload_txt").value = "Uploading: " + data.name;




		const BOUNDARY = "END_OF_PART";
        const MULTI = "@mozilla.org/io/multiplex-input-stream;1";
        const FINPUT = "@mozilla.org/network/file-input-stream;1";
        const STRINGIS = "@mozilla.org/io/string-input-stream;1";
        const BUFFERED = "@mozilla.org/network/buffered-input-stream;1";
        const nsIMultiplexInputStream = Components.interfaces.nsIMultiplexInputStream;
        const nsIFileInputStream = Components.interfaces.nsIFileInputStream;
        const nsIStringInputStream = Components.interfaces.nsIStringInputStream;
        const nsIBufferedInputStream = Components.interfaces.nsIBufferedInputStream;


	/*	this._uploadHistory.push({
            "file": data.name,
            "status": false,
            "error": ""
        });*/

		//console.log(data.data);
		var buf = Components.classes[STRINGIS].createInstance(nsIStringInputStream);
        buf.setData(aURL, aURL.length); //<-- hier ist der fehler


      //  buf = buf.replace(/>.*<\/a>/gi,">");
		//console.log(data.data.value.toString().length);
		//alert(data.data.value)
		//<a href="http://www.pgts.com.au/download/txt/wav.txt">wav.txt</a>
		var mis = Components.classes[MULTI].createInstance(nsIMultiplexInputStream);
        //var fin = Components.classes[FINPUT].createInstance(nsIFileInputStream);
        //fin.init(file, 1, 292, null);
        //var buf = Components.classes[BUFFERED].createInstance(nsIBufferedInputStream);
        //buf.init(fin, (file.fileSize - 1));
        var mime_1 = Components.classes[STRINGIS].createInstance(nsIStringInputStream);
        var mime_1_string = new String();
        mime_1_string += "\r\n";
        mime_1_string += "Media multipart posting\r\n";
        mime_1_string += "\r\n--" + BOUNDARY + "\r\n";
        mime_1_string += "Content-Type: application/atom+xml\r\n";
        mime_1_string += "\r\n";
        mime_1_string += '<?xml version=\'1.0\' encoding=\'UTF-8\'?><atom:entry xmlns:atom="http://www.w3.org/2005/Atom"><atom:category scheme="http://schemas.google.com/g/2005#kind" term="http://schemas.google.com/docs/2007#spreadsheet" /><atom:title>' + "NewDoc" + "</atom:title></atom:entry>\r\n";
        mime_1_string += "\r\n--" + BOUNDARY + "\r\n";
        mime_1_string += "Content-Type: text/html\r\n\r\n";
        mime_1.setData(mime_1_string, mime_1_string.length);
        var hsis = Components.classes[STRINGIS].createInstance(nsIStringInputStream);
        var sheader = new String();
        sheader += "\r\n";
        sheader += "--" + BOUNDARY + '\r\nContent-disposition: form-data;name="addfile"\r\n\r\n1';
        sheader += "\r\n--" + BOUNDARY + "\r\n";
        sheader += 'Content-disposition: form-data;name="filename";filename="' + "NewDoc" + '"\r\n';
        sheader += "Content-Type: application/octet-stream\r\n";
        //sheader += "Content-Length: " + data._size + "\r\n\r\n";
        hsis.setData(sheader, sheader.length);
        var endsis = Components.classes[STRINGIS].createInstance(nsIStringInputStream);
        var bs = new String("\r\n--" + BOUNDARY + "--\r\n");
        endsis.setData(bs, bs.length);
        mis.appendStream(mime_1);
        mis.appendStream(buf);
        mis.appendStream(endsis);
     //   console.log(mis);


     /*   YAHOO.util.Connect.resetDefaultHeaders();
        YAHOO.util.Connect.initHeader("Authorization", "GoogleLogin auth=" + this._AUTH);
        YAHOO.util.Connect.initHeader("Content-Length", mis.available() - 2);
        YAHOO.util.Connect.setDefaultPostHeader("multipart/related; boundary=" + BOUNDARY);
        YAHOO.util.Connect.initHeader("Slug", data.name);
        YAHOO.util.Connect.initHeader("MIME-version", "1.0");
        YAHOO.util.Connect.initHeader("Cookie", "", false);
        this._uploadConnection = YAHOO.util.Connect.asyncRequest("POST", "http://docs.google.com/feeds/documents/private/full", {
            success: this.uploadSuccess,
            failure: this.uploadFail,
            scope: this
        },
        mis); */


 // var boundaryString = "-gd-upload---";
 // var boundary = "--" + boundaryString;
 // var postData = ["", boundary, "Content-Disposition: form-data; name=\"security_token\"", "", aToken,
   // boundary, "Content-Disposition: form-data; name=\"formsubmitted\"", "", "true", boundary,
    //"Content-Disposition: form-data; name=\"uploadURL\"", "", aURL, boundary + "--"].join("\r\n");
  xhr.setRequestHeader("Content-Type","multipart/related; boundary="+BOUNDARY);
//xhr.setRequestHeader("Content-Type","application/msword");
xhr.setRequestHeader("MIME-version", "1.0");
xhr.setRequestHeader("Authorization", "GoogleLogin auth=" + aToken);
 // xhr.setRequestHeader("Content-length", postData.length);




  xhr.onreadystatechange = function(aEvent) {


    if(xhr.readyState == 4 && xhr.status == 200) {


      // openDoc(xhr.channel.URI.spec);
     }
   }
   xhr.send(mis);
 } 


 /*  function showAlert(title, message) {


	  	var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"] 
                         .getService(Components.interfaces.nsIPromptService);


	  	promptService.alert(window, title, message);
	} */


window.addEventListener("load", function(event) { GoogleDocs.onLoad(event); }, false);