function getEventSrc(e) {
 // get a reference to the IE/windows event object
 if (!e) e = window.event;

 // DOM-compliant name of event source property
 if (e.target)
   return e. target;
 // IE/windows name of event source property
 else if (e.srcElement)
   return e.srcElement;
}

//
// Process the XForm submission
//
function submitForm(form, modelid, submissionid) {
    var usedElements = [];
    var imElements = [];
    var saction = '__submission_action+'+modelid+'+'+submissionid
    var smethod = '__submission_method+'+modelid+'+'+submissionid
    var starget = '__submission_target+'+modelid+'+'+submissionid
    // This is basically a hack, because, for some reason, early mozilla
    // versions seem to supress the value of the submitted button when
    // the onclick event is raised
   form.__submit__.value = modelid+'+'+submissionid
   for (var i=0; i < form.elements.length; i++) {
        if (form.elements[i].name == saction) {
            form.action = form.elements[i].value;
        }
        else if (form.elements[i].name == smethod) {
            if (form.elements[i].value == 'form-data-post') {
                form.method = 'POST';
                form.enctype = 'multipart/form-data';
            }
            else if (form.elements[i].value == 'urlencoded-post') {
                form.method = 'POST';
                form.enctype = 'application/x-www-form-urlencoded';
            }
            else {
                form.method = 'GET';
            }
        }
        else if (form.elements[i].name == starget) {
            form.target = form.elements[i].value;
        }

         // Set up the real form elements for submission, and delete
         // the placeholders
         currElement = form.elements[i];
         try {
             var eparts = currElement.name.split('+')
             if (eparts[0] == modelid) {
                 currElement.name = eparts[1];
                 usedElements.push(currElement.name);
             };
             if (eparts[0] == '__instance' && eparts[1] == modelid) {
                 imElements.push(currElement);
             };
             // we don't want this node to appear in the submission
             if (currElement.name != eparts[1] && currElement.name.indexOf('__submit') != 0) {
                 currElement.disabled = true;
             }
         }
         catch (e) {}
    }


     // figure out which elements we've used, and which are supposed
     // to be 'automatically' submitted as hidden elements
     var uLen = usedElements.length;
     var imLen = imElements.length;
     for (var i=0; i < imLen; i++) {
         var imElement = imElements[i];
         var imParts = imElement.name.split('+');
         var used = false;
         for (var j=0; j < uLen; j++) {
             if (usedElements[j] == imParts[2]) {
                 used = true;
                 break;
             }
         }
         if (used == false) {
             imElement.name = imParts[2];
             imElement.disabled = false;
         }
     }

    form.submit();
    return true;
};

function submitButtonHandler(submitter) {
    var sparts = submitter.name.split('+');
    var sname = sparts[0];
    var modelid = sparts[1];
    var submissionid = sparts[2];

    return submitForm(submitter.form, modelid, submissionid);
}

function keypressEventHandler(form, event) {
    target = getEventSrc(event);
    var sparts = target.name.split('+');
    var modelid = sparts[0];
    var submissionid = '';
    if (event.keyCode == 13) {
        submissionid = getSubmissionId(form);
        submitForm(form, modelid, submissionid);
        return false;
    }
    return true;
}

//------------------------------------------------------------------------------
// getSubmissionId - gets the submission id of a form.
//------------------------------------------------------------------------------

function getSubmissionId (modelid, form) {
    for (var i=0; i < form.elements.length; i++) {
        var eparts = form.elements[i].name.split('+');
        if (eparts[0] == '__submission_action' && eparts[1] == modelid) {
            return (eparts[2]);
        }
    }

    // Submission ID not found.
    return ('');
}

//------------------------------------------------------------------------------
// ToggleNavigationVisibility - toggles the visibility of a single object in the
// site navigation.
//------------------------------------------------------------------------------

function ToggleNavigationVisibility (modelid, id, submissionid) {
    // Check the corresponding checkbox.
    var checkboxid = modelid + '-' + id;
    var checkbox = document.getElementById(checkboxid);
    checkbox.checked = true;

    // Get the form containing this element.
    var parent = checkbox;
    while (parent = parent.parentNode) {
        if (parent.tagName == 'FORM') break;
    }
    if (!parent) {
        return (false);
    }
    else {
        var form = parent;
    }

    // Submit the form.
    submitForm(form, modelid, submissionid);
    return (false);
}

//------------------------------------------------------------------------------
// SubmitParentForm - submits the form containing this element.
//------------------------------------------------------------------------------
function SubmitParentForm (el, modelid, submissionid) {

    // Get the form containing this element.
    var parent = el;
    while (parent = parent.parentNode) {
        if (parent.tagName == 'FORM') break;
    }
    if (!parent) {
        return (false);
    }
    else {
        var form = parent;
    }

    // Submit the form.
    submitForm(form, modelid, submissionid);
    return (false);
}