Hallo
<input type="button" value="Button" onclick="location.href='javascript:openWindow('seite.html','popup','width=550,height=550,screenX=100,left=100,screenY=100,top=100,toolbar=0,menubar=0,location=0,status=0,resizable=0,scrollbars=yes')'" name="button">
^^^^^^^^^^^^^^^^^^^^^^^^^^
Es muß so heißen:
<input type="button" value="Button" onclick="openWindow('seite.html','popup','width=550,height=550,screenX=100,left=100,screenY=100,top=100,toolbar=0,menubar=0,location=0,status=0,resizable=0,scrollbars=yes')'" name="button">
Viele Grüße...
Alex :)