function GetPhoto(img){
  photo1= new Image();
  photo1.src=(img);
  Controls(img);
}
function Controls(img){
  if((photo1.width!=0)&&(photo1.height!=0)){
    viewPhoto(img);
  }
  else{
    myfunction="Controls('"+img+"')";
    intervallo=setTimeout(myfunction,20);
  }
}
function viewPhoto(img){
  mylength=photo1.width+20;
  myheight=photo1.height+20;
  features="width="+mylength+",height="+myheight;
  finestra=window.open(img,"",features);
}