Do I need any new plugins in order to use the ".getJSON()" method in Firefox? Currently I'm trying to pull back JSON data from a target and the following statement:

 

 ${esc.d}.getJSON(targetUrl,function(jsonData,status,xhr)
        {
    alert("JSON-DATA=("+jsonData+") !...");

     }
    );

 

is apparently not working because I do not get an alert when I run it.