'element.dialog:act' is null or not an Object?

[esource]

I run a customized dialog on Alfresco 3.2r2.  On Firefox, it runs without a problem.  But on IE, I get the following browser failure messages:

'elements' is Null or not an object
container.jsp                                      row 325

'elements.dialog:act' is Null or not an object
container.jsp                                                    row 381
Code: 0                                                             Character 3
URI:http://localhost:8080/alfresco/faces/jsp/dialog/container.jsp

The browser then stops functioning.  What does this mean?  I looked in container.jsp, but there is no line 325 or 381.   There also is nothing called 'elements'.  What is wrong?  How can I correct this problem?

[esource]

Now I get another set of error messages from the browser:

browse.jsp    Row: 280
Code:0           Character:1
URI: http://localhost:8080/alfresco/faces/jsp/browse/browse.jsp

'document.forms.dialog.dialog:act' is Null or not Object
browse.jsp     Row: 281

'document.forms.dialog.dialog;sidebar-body:navigator' is Null or not Object
browse.jsp       Row 155

Not sure how to interpret these set of messages either.