MSCRM 4.0: Hide Duplicate Titles of CRM Notes Field

There was a question on CRM Development Forum about how to hide one of the titles of CRM notes field. The requirement is to make it looks like something as below.

Before hiding:

After hiding the titles:

Here is the script that I came up.

(function hideNotesTitle() {
    var notesField = crmForm.all.notescontrol;
    if (!notesField) return;  // there is no notes field on current form

    var onReadyStateChange = function() {
        if (notesField.readyState === 'complete') {
            var notesDoc = notesField.contentWindow.document;
            var notesTable = notesDoc.getElementById("NotesTable");
            var notesTableBody = notesTable.childNodes[1];

            for (var i = 0, len = notesTableBody.childNodes.length; i < len; i++) {
                var row = notesTableBody.childNodes[i];
                if (row.className == "noteHeader" && !row.oId) {
                    row.style.display = "none";
                }
            }

            notesField.detachEvent('onreadystatechange', onReadyStateChange);
        }
    };

    notesField.attachEvent('onreadystatechange', onReadyStateChange);
})();

To use the function, you simply copy the code to your CRM form's OnLoad event.

Hope this snippet gives you some idea about how to work with CRM notes field if you ever need to do something similar.

Cheers!