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I have a PanelBar with only one item that is above a Grid. When I click on the panel bar to expand it, it expands under the grid and the grid doesn't move down until I move my mouse over the grid. When I click on the bar to collapse it, it collapses, but the grid doesn't move back up until I move my mouse over the grid again. It doesn't seem to happen in Firefox, but does in IE7 & IE8. Any ideas of how to prevent this from happening in IE?