error using XmlHttpRequest in Firefox

[satishr23]

Hi, I am trying to develop a RSS reader using Ajax.
I use the following Get statement.
AjaxObject.open("GET",URL,true)
where URL is the location of my feed.
Now when I give URL as a file in my localhost directory, it works fine in both IE and Firefox.
But when give URL as a remote feed,it doesnt work in Firefox. It gives me an 'undefined' error.
I read somewhere that it could be because Firefox blocks cross-domain operations so I included the folowing statement in my Js file

try
{
netscape.security.PrivilegeManager.enablePrivilege ("UniversalBrowserRead");
}
catch(e)
{
alert("Permission UniversalBrowserRead denied.");
}

But it still goes into the catch mode...

Any idea on how to solve this problem?
Help would be greatly appreciated.
Thanks

[dmjpro]

can u send me ur js code where u make the request.
then i think it ll be better to solve ur problem.

kind regards.
dmjpro.

[satishr23]

Hi,
Thanks for your reply..
Here is my code..

url="http://newsrss.bbc.co.uk/rss/newsonline_uk_edition/front_page/rss.xml";
function getRSS()
    { 
    if (window.ActiveXObject)
        {
        ajaxobj = new ActiveXObject("Microsoft.XMLHTTP");
        alert("microsoft xmlhttp");
        }
    else if (window.XMLHttpRequest)
        {
        ajaxobj = new XMLHttpRequest();
        if (typeof netscape != 'undefined' && typeof netscape.security !=             'undefined') 
                {
                 try {
          netscape.security.PrivilegeManager.enablePrivilege('UniversalBrowserRead');
                     }
                catch (e) {
                               alert('Error ' + e.message + ' occurred.');
                             }
         }
 
           alert("xmlhttprequest");
         }
    else
        alert("not supported");
 
    try
    {
    ajaxobj.open("GET",url+"?sid="+Math.random(),true);
    }
    catch(error)
    {
     alert("catch"+ error.description);   //script doesnt go beyond this in Firefox
     return false;
     }
       ajaxobj.onreadystatechange = function() {
        if (ajaxobj.readyState == 4)
        {
            if (ajaxobj.status == 200)
            {
                if (ajaxobj.responseText != null)
                {
                processRSS(ajaxobj.responseXML);
                }
                else
                {
                 alert("Failed to receive RSS file from the server - file not found.");
                return false;
                }
            }
         else
            alert("Error code " + ajaxobj.status + " received: " + ajaxobj.statusText);
         }
    }
 
    ajaxobj.send(null);
    }
 
 

[acoder]

To get around the security (same domain), use JSON, e.g. link.