function PrevFoto(img){
  foto1= new Image();
  foto1.src=(img);
  Controlla(img);
}
function Controlla(img){
  if((foto1.width!=0)&&(foto1.height!=0)){
    viewFoto(img);
  }
  else{
    funzione="Controlla('"+img+"')";
    intervallo=setTimeout(funzione,20);
  }
}
function viewFoto(img){
  largh=foto1.width;
  altez=foto1.height;
  if (altez < 600) {
  stringa="width="+largh+",height="+altez;
  finestra=window.open("tabella.asp?file="+img,"",stringa);  
    }
  else{
  largh=foto1.width+20;	  
  stringa="width="+largh+",height=600, scrollbars=yes";	
  finestra=window.open("tabella.asp?file="+img,"",stringa);  
  }
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
	window.open(theURL,winName,features);
}