Q1258 How can I combine tool tips with an image map?

<script type="text/javascript" language="JavaScript"><!--
function show(object) {
    if (document.layers && document.layers[object] != null)
        document.layers[object].visibility = 'visible';
    else if (document.all)
        document.all[object].style.visibility = 'visible';
}
function hide(object) {
    if (document.layers && document.layers[object] != null)
        document.layers[object].visibility = 'hidden';
    else if (document.all)
        document.all[object].style.visibility = 'hidden';
}
//--></script>

<style type="text/css"><!--
.myStyle {
    position: absolute;
    visibility: hidden;
}
//--></style>

<map name="image-map">
<area shape="rect" coords="15,15,85,85" href="javascript:alert('1')"
   onMouseover="show('myLayer1')" onMouseout="hide('myLayer1')"
>
<area shape="rect" coords="93,15,110,85" href="javascript:alert('2')"
   onMouseover="show('myLayer2')" onMouseout="hide('myLayer2')"
>
<area shape="circle" coords="150,50,35" HREF="javascript:alert('3')"
   onMouseover="show('myLayer3')" onMouseout="hide('myLayer3')"
>
</map>

<img name="boxImage" src="white.gif" border=0 width=200 height=100 usemap="#image-map">

<div id="myLayer1" class="myStyle">
<table bgcolor="#ffffcc"><tr><td>
This text is hidden from view.
<br>
It is revealed when the mouse
<br>
moves over the first hot spot
</td></tr></table>
</div>

<div id="myLayer2" class="myStyle">
<table bgcolor="#ffffcc"><tr><td>
This text is also hidden from view until it is
revealed when the mouse moves over the 2nd hot spot
</td></tr></table>
</div>

<div id="myLayer3" class="myStyle">
<table bgcolor="#ffffcc"><tr><td>
Some more text which is also hidden from view until it is
revealed when the mouse moves over the 3rd hot spot
</td></tr></table>
</div>