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How to request a password protected page in Javascript

I am working on a very simple sidebar gadget to analyze the monthly usage of the router’s bandwidth and determine how far forward or backward I am for this month. The data is located on a password-protected web page on the router (I use DD-WRT, if that matters). I would like to send the page request to the router using Javascript along with all the authentication information in order to get the whole page in one go, but I cannot find the appropriate syntax for this. Any ideas?

Here is my code:

var ua = navigator.userAgent.toLowerCase();
        if (!window.ActiveXObject){
          req = new XMLHttpRequest();
        }else if (ua.indexOf('msie 5') == -1){
          req = new ActiveXObject("Msxml2.XMLHTTP");
        }else{
          req = new ActiveXObject("Microsoft.XMLHTTP");
        }

        req.open('GET', 'http://192.168.1.1/Status_Internet.asp', false, "username", "password");   
        req.send(null);  
        if(req.status == 200){
           dump(req.responseText);
        } else{
            document.write("Error");
        }

        document.write("Second Error");

Firebug indicates that it is an error at req.send(null)- in particular Access to restricted URI denied" code: "1012.

- , , xmlhttpRequest?

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, jQuery .

jQuery $.ajax.

$.ajax({
  url: "path/to/your/page.html", // self-explanatory
  password:"your password", // a string with your password.
  success: function(data){ // on sucsess:
  $("someDiv").html(data); // load in the retrived page
 }
});

. jQuery ajax API.

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