Oddly it does appear in the actual IE 8 under Win XP. But not all the time. Using that browser's developer tools, I cannot identify the element involved. It has a point and click way of identifying elements, but even at 400% magnification the line is still only 1px high so doesn't present much of a target. Looking above and below in the DOM tree yields nothing either.
However I did notice that the page is in quirks mode. If I use standards mode, it appears to go away. To test that out, change:
to:HTML Code:<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
Or, if you want the closest standards invoking DOCTYPE to the one it already has, you can use:HTML Code:<!DOCTYPE html>
I cannot be certain if that will fix it because, as I say, the lines didn't appear all the time in IE 8 anyway. I did try it numerous times though and the lines never came back in IE 8 standards mode. I also tried Safari Win (I have no Mac to test on), but it didn't show the lines. This may fix it in your Safari Mac too. Just no promises.HTML Code:<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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