Q1028 How can I remove the dotted line around a hot spot on an image map, when the hot spot is clicked?

<SCRIPT LANGUAGE="JavaScript"><!--
function changeImagemap(newImage) {
    if (document.images)
            document.images['boxImage'].src = eval(newImage + ".src");
}

if (document.images) {
    white = new Image();
    white.src  = "white.gif";

    red = new Image();
    red.src  = "red.gif";

    green = new Image();
    green.src  = "green.gif";

    blue = new Image();
    blue.src  = "blue.gif";
}

function go(url) {
    alert(url); // replace with: location.href = url;
    self.focus();
}
//--></SCRIPT>

<MAP NAME="image-map">
<AREA SHAPE="RECT" COORDS="15,15,85,85" HREF="javascript:go('http://www.irt.org/')"
   onMouseOver="changeImagemap('red');self.status='irt.org';return true"
   onMouseOut="changeImagemap('white');self.status='';return true"
   onClick="if (navigator.appName == 'Microsoft Internet Explorer') this.blur()"
>
<AREA SHAPE="RECT" COORDS="93,15,110,85" HREF="javascript:go('http://www.irt.org/script/faq.htm')"
   onMouseOver="changeImagemap('green');self.status='JavaScript FAQ';return true"
   onMouseOut="changeImagemap('white');self.status='';return true"
   onClick="if (navigator.appName == 'Microsoft Internet Explorer') this.blur()"
>
<AREA SHAPE="CIRCLE" COORDS="150,50,35" HREF="javascript:go('http://www.irt.org/articles/script.htm')"
   onMouseOver="changeImagemap('blue');self.status='JavaScript Articles';return true"
   onMouseOut="changeImagemap('white');self.status='';return true"
   onClick="if (navigator.appName == 'Microsoft Internet Explorer') this.blur()"
>
</MAP>

<IMG NAME="boxImage" SRC="white.gif" BORDER=0 WIDTH=200 HEIGHT=100 USEMAP="#image-map">