onMouseOver tests - unexpected one pixel box between edge and content of text inputs

OAAOA onMouseOver tests - unexpected one pixel box between edge and content of text inputs Test page for onMouseOver and onMouseOut

Slowly drag your mouse,
one pixel at a time
across the white and gray or black and gray borders of the text box
and not more than one pixel into the white content area of the text box.

Expected results:

Event 4: "onMouseOut" on: INPUT_2
Event 3: "onMouseOver" on: INPUT_2
Event 2: "onMouseOut" on: INPUT_1
Event 1: "onMouseOver" on: INPUT_1

Actual results:

Event 12: "onMouseOut" on: INPUT_2
Event 11: "onMouseOver" on: INPUT_2
Event 10: "onMouseOut" on: INPUT_2
Event 9: "onMouseOver" on: INPUT_2
Event 8: "onMouseOut" on: INPUT_2
Event 7: "onMouseOver" on: INPUT_2
Event 6: "onMouseOut" on: INPUT_1
Event 5: "onMouseOver" on: INPUT_1
Event 4: "onMouseOut" on: INPUT_1
Event 3: "onMouseOver" on: INPUT_1
Event 2: "onMouseOut" on: INPUT_1
Event 1: "onMouseOver" on: INPUT_1