GWT javascript error in IE8 [closed]

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Using a couple of GWT controls in a very simple way ... however it isn't working properly in IE and I notice that there is a JavaScript error on the page.

The GWT setup is a simple TabLayoutPanel taken directly from the example at its documentation page: http://google-web-toolkit.googlecode.com/svn/javadoc/2.0/index.html?com/google/gwt/user/client/ui/RootLayoutPanel.html

The problem is only the first tab's content area is sized properly, the other tabs receive only a 32x32 square of content area ...

When the GWT page loads this JavaScript error is immediately shown in IE: '$doc.getElementById(...)' is null or not an object.

This is occurring in one of the generated .cache.html files that GWT produces.

Resizing the window seems to cause the tab content area to be updated correctly ... but the JavaScript error remains. :(