function CleanUpText(inputFieldId) {
    var elt = document.getElementById(inputFieldId);
    var retval = "";
    retval = elt.value;
    retval = retval.replace(/[<]/g, '&lt;');
    retval = retval.replace(/[>]/g, '&gt;');
    elt.value = retval;
    return true;
}