function dumpObject(obj){
    var output = '';
    for (i in obj){
      output = output + i+':'+obj[i]+"\n";
    }
    return output;
}

// global flag
var isIE = false;

// global zipuest and XML document objects
var zip;

// retrieve XML document (reusable generic function);
// parameter is URL string (relative or complete) to
// an .xml file whose Content-Type is a valid XML
// type, such as text/xml; XML source must be from
// same domain as HTML file
function loadZipDoc(url) {
    // branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        zip = new XMLHttpRequest();
        zip.onreadystatechange = processReqChange;
        zip.open("GET", url, true);
        zip.send(null);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        isIE = true;
        zip = new ActiveXObject("Microsoft.XMLHTTP");
        if (zip) {
            zip.onreadystatechange = processReqChange;
            zip.open("GET", url, true);
            zip.send();
        }
    }
}

// handle onreadystatechange event of zip object
function processReqChange() {
    // only if zip shows "loaded"
    if (zip.readyState == 4) {
        // only if "OK"
        if (zip.status == 200) {
            processZip();
         } else {
            //silently ignore any errors
            //alert("There was a problem retrieving the XML data:\n" + zip.statusText);
         }
    } 
}

// invoked by "Category" select element change;
// loads chosen XML document, clears Topics select
// element, loads new items into Topics select element
function loadDoc(evt) {
    if (document.getElementById("country").value != "United States") {
        return;
    }

    // equalize W3C/IE event models to get event object
    evt = (evt) ? evt : ((window.event) ? window.event : null);
    if (evt) {
        // equalize W3C/IE models to get event target reference
        var elem = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
        if (elem) {
            try {
                if (elem.value != '') {
                    //Load from specific URL
                    loadZipDoc('/xmljs/flprocess_zip.asp?zip='+elem.value);
                }       
            }
            catch(e) {
                var msg = (typeof e == "string") ? e : ((e.message) ? e.message : "Unknown Error");
//                alert("Unable to get XML data:\n" + msg);
                return;
            }
        }
    }
}

function processZip() {
    var city = zip.responseXML.getElementsByTagName('city')[0].firstChild;
    var state = zip.responseXML.getElementsByTagName('state')[0].firstChild
    if (!city && !state) return;

    city = city.nodeValue;
    state = state.nodeValue;

    if (city && state) {
        document.getElementById('city').value = city;
        var stateobj = document.getElementById('state');
        for (i=0; i<stateobj.options.length; i++) {
            if (stateobj.options[i].value == state) {
                stateobj.options[i].selected = true;
                break;
            }
        }
        // Call the change handler on the state object if there is one.
        try { 
            stateobj.onchange();
        } 
        catch(e) {
        }
    }
}