Sometimes with form field validation you use onblur to refocus on the element if it has not been correctly filled out for instance <input onblur="if (this.value == '') this.focus();"> This works in NN4, IE6, but with NN6.2 and Mozilla 0.9.7 it doesn't work, the focus is simply set to the next element in tab order and remains there when you tab out of the element. As my test code shows the onblur event is fired, but for unknown reasons the focus() call has no effect. The test code also contains a workaround using setTimeout to trigger the focus() call which works so it seems to be a timing problem.

*** This bug has been marked as a duplicate of 109962 ***