function Show_foto(newpic) {
  if(isDOM)document.getElementById("_foto").src = PicVal[newpic];
  else if(isIE) document._foto.src = PicVal[newpic];
  document.form_foto.testo_foto.value=TxtVal[newpic];
  //document.form_foto.data_foto.value=DatVal[newpic];
  //SelectionBox = document.form_foto.menudrop;
  //SelectionBox.options[newpic].selected = true;
  current = newpic;
}
/*function Random_foto() {
  TotalImages = document.form_foto.menudrop.options.length;
  current = Math.floor(Math.random()*TotalImages);
  Show_foto(current);
}*/
function Previous_foto() {
  //TotalImages = document.form_foto.menudrop.options.length;
  current--;
  if(current<0) current = TotalImages - 1;
  Show_foto(current);
}
function Next_foto() {
  //TotalImages = document.form_foto.menudrop.options.length;
  current++;
  if (current>=TotalImages) current = 0;
  Show_foto(current);
}