to do so you gotta have a function and then just invoke it when user clicks the picture:
<script>
function mypopup()
{
mywindow = window.open("picture.jpg","mywindow","location=0,s tatus=0,scrollbars=1,width=100,height=100");
mywindow.moveTo(0,0);
}
//moveTo(x,y) method moves the window to x,y position on the screen
</script>
<body>
<p>
<a href="javascript
:mypopup()">
<img src="Burton_small.jpg">
</a>
</p>
</body>
depending on how you want the new window to look like, modify its features in window.open() method (width, height etc...)
:D

:D:D:D
the genuine genius