This is a paragraph with a test link in the middle, having 2em horizontal margins and yellow background-color. The margins are clickable/hoverable in IE6-7, they are not so in any other browsers. Then there is a second test link without margins, but inside a span having the 2em horizontal margins. The margins are not clickable in IE6-7, but the right one incorrectly gets the link background color (unless it wraps on multiple lines). Then there is a third test link like the second one inside a span with margins, but with some white space between the closing tags of the link and the span. No more background extension on the right margin in IE6-7.