Questa pagina rileva le dimensioni dell'immagine.
codice:
 <HTML> 
<HEAD> 
 <TITLE>Zoom Foto</TITLE> 
 <script language='javascript'> 
   var arrTemp=self.location.href.split("?"); 
   var picUrl = (arrTemp.length>0)?arrTemp[1]:""; 
   var NS = (navigator.appName=="Netscape")?true:false; 

     function FitPic() { 
       iWidth = (NS)?window.innerWidth:document.body.clientWidth; 
       iHeight = (NS)?window.innerHeight:document.body.clientHeight; 
       iWidth = document.images[0].width - iWidth; 
       iHeight = document.images[0].height - iHeight; 
       window.resizeBy(iWidth, iHeight); 
       self.focus(); 
     };
 </script> 
</HEAD> 
<BODY bgcolor="#000000" onload='FitPic();' topmargin="0" marginheight="0" leftmargin="0" marginwidth="0"> 
 <script language='javascript'> 
 document.write( "[img]" + picUrl + "[/img]" ); 
 </script> 
</BODY> 
</HTML>
La PopUp va richimata cosi:
Vedi Immagine