questa è la mia pagina html ma non va nonostante la tua correzione
<html>
<head>
</head>
<body>
<p align="center">[img]foto.jpg[/img]</p>
<?
window.onload = function() {
var draggable = document.getElementById("draggable"),
zoomIn = document.getElementById("zoomIn"),
zoomOut = document.getElementById("zoomOut");
Drag.init(draggable);
zoomIn.onclick = zoomOut.onclick = function() {
var in = this.id === 'zoomIn' ? -10/100 : 10/100,
w = parseInt(draggable.style.width.slice(0, -2)),
h = parseInt(draggable.style.height.slice(0, -2));
draggable.style.width = ( w + w*in ) + 'px';
draggable.style.height = ( h + h*in ) + 'px';
}
}
?>
<p align="center">
<input type="button" id="zoomIn" value="Zoom +" onclick="ZoomIn()">
<input type="button" id="zoomOut"value="Zoom -" onclick="ZoomOut()">
</p>
</body>
</html>
