Código PHP:
<HTML>
<HEAD>
<TITLE> Efecto lupa </TITLE>
<SCRIPT LANGUAGE="JavaScript">
<!--
function Mover(imagen){
var equis=window.event.x;
var ye=window.event.y;
document.getElementById('lupa').style.posTop=ye;
document.getElementById('lupa').style.posLeft=equis;
document.getElementById('lupa').style.visibility='visible';
document.images['zoom'].src=imagen;
document.getElementById('original').style.cursor='crosshair';
}
function Salir(){
document.getElementById('original').style.cursor='';
document.getElementById('lupa').style.visibility='hidden';
}
//-->
</SCRIPT>
</HEAD>
<BODY BGCOLOR="#FFFFFF">
<img style="position:absolute; top:0; left:0;
visibility:hidden; width:20px" id="lupa"
src="cursor.ico">
<map name="mapeado">
<area shape="rect" coords="0,0,3,143" onmouseout="Salir()" onmousemove="Mover('http://localhost/asp/php/javascripts/imagenes/americanpie/amppeq1.jpg')">
</map>
<IMG ismap usemap="#mapeado" name="original" SRC="C:/asp/php/Javascripts/Imagenes/americanpie/ame3.jpg">
<img id="zoom" width=300 height=300 src="/imagenes/americanpie/ame2.jpg">
</BODY>
</HTML>