As the mouse moves between line 1 and 2 the hover state goes away until it rolls back into line 2 of the link.

Firefox keeps the hover state active between lines of a css link.  Its only in Internet Explorer that the rollover flickers.  Here’s what I found:  if you add height: 1% to the definition of the css tag a then the flashing rollovers will go away.

a {
 color: #1b155f;
 text-decoration: underline;
 height: 1%;
}