I have a Ext.tab.Panel inside which i have a treepanel, on mouse over of each row of treepanel i have a menubutton displayed. The problem iam facing is when i first move mouse over a row of tree panel the on hover menu button displays but when i move out of the treepanel the mouse over menu button does not go away. I have tried containermouseout with no success ...... what is it that iam missing?