I'm trying to call a cfc from javascript and I keep getting a permissions error. Do I need to have anything set up for this to work? Here is the error:

Error: uncaught exception: Permission denied to call method XMLHttpRequest.open

Can we see the code you are using to do the call?

Here is the set up code:

<!--- URL that will return WDDX packet containing recordset of film data --->
<cfset FilmComponentURL = "http://myIPaddress/comDirectory/component.cfc?">

<!--- Pass variables to JavaScript --->
<cfoutput>
<script type="text/javascript" language="JavaScript">
var FilmComponentURL = "#JSStringFormat(FilmComponentURL)#"
</script>
</cfoutput>

<!--- Include WddxRecordset support --->
<script type="text/javascript" language="JavaScript" src="scripts/wddx.js"></script>

<!--- Include WddxDeserializer support --->
<!--- (use special file if browser is IE under Windows --->
<cfif (CGI.HTTP_USER_AGENT contains "MSIE")
AND (CGI.HTTP_USER_AGENT contains "Win")>
<script type="text/javascript" language="JavaScript" src="scripts/wddxDesIE.js"></script>
<cfelse>
<script type="text/javascript" language="JavaScript" src="scripts/wddxDes.js"></script>
</cfif>



And then here is the call and deserialization code:

// Add the value to the URL
var packetURL = FilmComponentURL + "method=getTable&table=tableToGet&id=" + season;

// Fetch the WDDX packet from the URL
var packet = httpGetFromURL(packetURL);

// Deserialize the packet
// The result is a WddxRecordset object called rsVenues
var wddxDes = new WddxDeserializer;
var rsVenues = wddxDes.deserialize(packet);


The code used is from Ben Forta's Advancaed CFWACK book for creating related selects in real time.

Well, the only thing I can think of off the top is are you calling the js from the same namespace as the FilmComponentURL?
So in this example is the calling page in the "http://myIPaddress/" domain?
If you're calling the page http://192.168.10.100/comDirectory/component.cfc? from http://www.myDomain.com/comDirectory/callingPage.cfm
js won't allow it even if they are in the same directory.
If that's not it I'm at a loss.

Well they are in the same domain, but different directories. Could it be because I am using the ip address instead of the domain name?

May be some kind of perms problem on your local machine. It's probably using the xmlDom object, maybe???

It won't run on the HMS server. I have a mpaaing set up for the folder the cfc is in; would I need a special perm set up to use the xmlDOM as I believe that is what it is using. I know it is using WDDX packets.

im not so sure u can do that
why dont u just create the cfobject which in turns runs it into js anyway?

email raymond camden at www.camdenfamily.com (i think) he rules cfc use