Hello all,

I've spend a lot of time trying to understand why the 'Ext.fly(...)' is null or not an object error was happening in TabPanel (when changing tab in IE6 and IE7).

The solution I've found is quite simple, you just have to override the getTarget method, hope this can help someone.

Code:
Ext.override(Ext.EventObjectImpl, {
    getTarget : function(selector, maxDepth, returnEl){
        var targetElement;

        try {
            targetElement = selector ? Ext.fly(this.target).findParent(selector, maxDepth, returnEl) : this.target;
        } catch(e) {
            targetElement = this.target;
        }

        return targetElement;
    }
});
Samuel