uh... non apre, posto il codice

<html>
<head>
<title>pagina prova</title>
</head>
<body>
<input type="button" name="button" onClick="window.open('http://www.html. it','_new','scrollbars=no,status=no,resi
zable=yes,menubar=no,width=400,height=300';">
</body>
</html>