Well if you would read carefully, you'd see I included onClick event to the A tag, AS WELL as the HREF attribute. This way, you keep the link and make your own click "adventure"... I'm copiing the part of the code again:

<A
    HREF="other_info/continents.aspx"
    onClick="javascript: window.open('other_info/continents.aspx'); window.event.returnValue=false;">
Continents</A>