function ShowFoto(img){
  foto1= new Image();
  foto1.src=(img);
  Control(img);
}
function Control(img){
  if((foto1.width!=0)&&(foto1.height!=0)){
    viewFoto(img);
  }
  else{
    funcao="Control('"+img+"')";
    intervall=setTimeout(funcao,10);
  }
}
function viewFoto(img){
  larg=foto1.width+37;
  alt=foto1.height+37;
  string="width="+larg+",height="+alt;
  janela=window.open(img,"",string);
}