hi
i write this code :

function fncXmlInterface(){
            var oXmlDom = zXmlDom.createDocument();
            oXmlDom.onreadystatechange = function () {
                if (oXmlDom.readyState == 4) {
                    if (oXmlDom.parseError.errorCode == 0) {
                        var oRoot = oXmlDom.documentElement;

                        var oNode = zXPath.selectSingleNode(oRoot, "accountinfo/account", null);

                        if (oNode) {
                            alert(oNode.xml);
                        }

                    } else {
                        //Error! Gather the information an alert it to the user.
                        var str = "An error occurred!!\n" +
                            "Description: " + oXmlDom.parseError.reason + "\n" +
                            "File: " + oXmlDom.parseError.url + "\n" +
                            "Line: " + oXmlDom.parseError.line + "\n" +
                            "Line Position: " + oXmlDom.parseError.linepos + "\n" +
                            "Source Code: " + oXmlDom.parseError.srcText;

                        alert(str);
                    }
                }
            };
            oXmlDom.load("getaccountinfo.xml");


}


it works fine in IE , firefox 2

but doesn't work in FireFox 3
fire bug error:


Permission denied to get property Element.tagName
__checkForErrors__()()zxml.js (line 179)
(?)()()zxml.js (line 109)
[Break on this error] if (this.documentElement.tagName == "parsererror") {

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