{function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);}


{image1 = new Image();
image1.src = "images/off.gif";
image2 = new Image();
image2.src = "images/off.gif";}


function checkname(form){
  if (form.email.value== "") {
    alert(" Introduzca su E-Mail por favor");
    form.email.value = "";
    form.email.focus();
    return false;
  } 
  if (form.email.value.indexOf('@',0) == -1){
    alert("Direccion E-Mail no valida");
    form.email.value = "";
    form.email.focus();
    return false;
  }
  if (form.email.value.indexOf('.',0) == -1){
    alert("Direccion E-Mail no valida");
    form.email.value = "";
    form.email.focus();
    return false;
  }
  if (form.comentario.value== "") {
    alert(" Introduzca su comentario por favor");
    form.comentario.value = "";
    form.comentario.focus();
    return false;
  } 
}