function emoticon(smiley) {
    var txtarea = document.comments_form.text;
    smiley = ' ' + smiley + ' ';
    if (txtarea.createTextRange && txtarea.caretPos) {
        var caretPos = txtarea.caretPos;
        caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? smiley + ' ' : smiley;
        txtarea.focus();
    } else {
        txtarea.value  += smiley;
        txtarea.focus();
    }
}