I've got a Javascript presentation with 100 images, i need an image map on the image 95. How can I add it?

that's the code

JAVASCRIPT
Code:
<script type="text/javascript" language="javascript">
            var images = new Array (100);
            images[0] = "01_generale_.html_files/01_generale_.001.jpg";
            images[1] = "01_generale_.html_files/01_generale_.002.jpg";
            images[2] = "01_generale_.html_files/01_generale_.003.jpg";
            ...
            images[99] = "01_generale_.html_files/01_generale_.004.jpg";
          
            var index = 0;
            function WindowLoaded(evt)
            {
                document.body.onselectstart = function () { return false; };
            }
            function Step(i)
            {
                GoTo(index + i)
            }
            function GoTo(newIndex)
            {
                if(newIndex >= 0 && newIndex < images.length)
                {
                    index = newIndex;
                    document.Slideshow.src = images[index];
                }
            }
 </script>
and that's the html Body

Code:
<body bgcolor="white" onload='WindowLoaded(event);'>
    <p align="center">
        <br/>
        <br/>
        <img name="Slideshow" alt="" src="01_generale_.html_files/01_generale_.001.jpg"/>
        <br/>
        <br/>
        <input type="image" src="01_generale_.html_files/home.png" onclick="GoTo(0)"/>
        &nbsp;&nbsp;&nbsp;
        <input type="image" src="01_generale_.html_files/prev.png" onclick="Step(-1)"/>
        <input type="image" src="01_generale_.html_files/next.png" onclick="Step(1)"/>
    </p>

</body>