function ftbTextChanged(ftb) {
    var intMaxLength = 4000;
    var spanNotes = document.getElementById('divLength');
    
    var html = ftb.GetHtml();
    var text = document.createTextNode(intMaxLength - html.length); 

    if (spanNotes.hasChildNodes()) {
        spanNotes.removeChild(spanNotes.firstChild);
    }
    spanNotes.appendChild(text);
    /*
    if (html.length >= intMaxLength) {
        html = html.substring(0, (intMaxLength - 1));
        ftb.SetHtml(html);
    }
    */
}

function ftbNotesTextChanged(ftb) {
    var intMaxLength = 500;
    var txtNotesID = ftb.id.replace('ftbNotes', 'lblNotesLength');
    var spanNotes = document.getElementById(txtNotesID);
    
    var html = ftb.GetHtml();
    var text = document.createTextNode(intMaxLength - html.length); 

    if (spanNotes.hasChildNodes()) {
        spanNotes.removeChild(spanNotes.firstChild);
    }
    spanNotes.appendChild(text);
    if (html.length >= intMaxLength) {
        html = html.substring(0, (intMaxLength - 1));
        ftb.SetHtml(html);
    }
}

function countFieldText(textarea, counter, max) {
    counter = document.getElementById(counter);
    var content = textarea.value;
    
    if (content.length > max) {
        content = content.substring(0, (max));
        textarea.value = content;
    }
    
    var text = document.createTextNode(max - content.length);
    if (counter.hasChildNodes()) {
        counter.removeChild(counter.firstChild);
    }
    counter.appendChild(text);
}