$(document).ready(function() {
    initialise(); //works fine with ()
})

    function initialise() {
        // Ensure we're working with a relatively standards compliant user agent
        if (!document.getElementById || !document.createElement || !document.createTextNode)
            return;

        // Add an event handler for the number form
        var objForm = document.getElementById('foiform');

        objForm.onsubmit = function() { return validateForm(objForm); };
    }

    function validateForm(objForm) {
        // Test whether fields are valid
        var bName = document.getElementById('txtName').value;
        var bEmail = document.getElementById('txtEmail').value;
        var bDocuments = document.getElementById('txtDocuments').value;
        var bPhone = document.getElementById('txtPhone').value;
        var bAddress = document.getElementById('txtAddress').value;
        var bCountry = document.getElementById('txtCountry').value;

        // If not valid, display errors
        if ((bName.length == 0) || (bEmail.length == 0) || (bDocuments.length == 0) || (bPhone.length == 0) || (bAddress.length == 0) || (bCountry.length == 0)) {
            var objExisting = document.getElementById('validationerrors');
            var objNew = document.createElement('div');
            var objTitle = document.createElement('h2');
            var objParagraph = document.createElement('p');
            var objList = document.createElement('ol');
            var objAnchor = document.createElement('a');
            var strID = 'firsterror';
            var strError;

            // The heading element will contain a link so that screen readers
            // can use it to place focus - the destination for the link is 
            // the first error contained in a list
            objAnchor.appendChild(document.createTextNode('Errors in Submission'));
            objAnchor.setAttribute('href', '#firsterror');
            objTitle.appendChild(objAnchor);
            objParagraph.appendChild(document.createTextNode('Please review the following'));
            objNew.setAttribute('id', 'validationerrors');
            objNew.appendChild(objTitle);
            objNew.appendChild(objParagraph);

            // Add each error found to the list of errors
            if (bName.length == 0) {
                strError = 'Please provide your Name';
                objList.appendChild(addError(strError, '#txtName', objForm, strID));
                strID = '';
            }

            if (bEmail.length == 0) {
                strError = 'Please provide your Email Address';
                objList.appendChild(addError(strError, '#txtEmail', objForm, strID));
                strID = '';
            }

            if (bDocuments.length == 0) {
                strError = 'Please identify the documents you want to access';
                objList.appendChild(addError(strError, '#txtDocuments', objForm, strID));
                strID = '';
            }

            if (bPhone.length == 0) {
                strError = 'Please provide your Phone Number';
                objList.appendChild(addError(strError, '#txtPhone', objForm, strID));
                strID = '';
            }

            if (bAddress.length == 0) {
                strError = 'Please provide your Address';
                objList.appendChild(addError(strError, '#txtAddress', objForm, strID));
                strID = '';
            }

            if (bCountry.length == 0) {
                strError = 'Please provide your Country';
                objList.appendChild(addError(strError, '#txtCountry', objForm, strID));
                strID = '';
            }

            // Add the list to the error information
            objNew.appendChild(objList);

            // If there were existing errors, replace them with the new lot,
            // otherwise add the new errors to the start of the form
            if (objExisting)
                objExisting.parentNode.replaceChild(objNew, objExisting);
            else {
                var objPosition = objForm.firstChild;
                objForm.insertBefore(objNew, objPosition);
            }

            // Place focus on the anchor in the heading to alert
            // screen readers that the submission is in error
            objAnchor.focus();

            // Do not submit the form
            objForm.submitAllowed = false;

            return false;
        }
        return true;
    }

    // Function to create a list item containing a link describing the error
    // that points to the appropriate form field
    function addError(strError, strFragment, objForm, strID) {
        var objAnchor = document.createElement('a');
        var objListItem = document.createElement('li');

        objAnchor.appendChild(document.createTextNode(strError));
        objAnchor.setAttribute('href', strFragment);
        objAnchor.setAttribute('title', strError);
        objAnchor.onclick = function(event) { return focusFormField(this, event, objForm); };
        objAnchor.onkeypress = function(event) { return focusFormField(this, event, objForm); };

        // If strID has a value, this is the first error in the list
        if (strID.length > 0)
            objAnchor.setAttribute('id', strID);
        objListItem.appendChild(objAnchor);

        return objListItem;
    }

    // Function to place focus to the form field in error
    function focusFormField(objAnchor, objEvent, objForm) {
        // Allow keyboard navigation over links
        if (objEvent && objEvent.type == 'keypress')
            if (objEvent.keyCode != 13 && objEvent.keyCode != 32)
            return true;

        // set focus to the form control
        var strFormField = objAnchor.href.match(/[^#]\w*$/);
        
        objForm[strFormField].focus();
        return false;
    }