function Validar(form)
{
  if (form.nombre.value == "")
  {
  alert("Please, enter your name"); form.nombre.focus(); 
  document.getElementById("nombre").style.backgroundColor = "#FF5357";
  return;
  } else{ 
    document.getElementById("nombre").style.backgroundColor = "#ffffff";
	}
//-----------------------------------------------------------------------------------------------
  if (form.telefono.value == "")
  {
  alert("Please, enter your phone"); form.telefono.focus(); 
  document.getElementById("telefono").style.backgroundColor = "#FF5357";
  return;
  } else{ 
    document.getElementById("telefono").style.backgroundColor = "#ffffff";
	}
//-----------------------------------------------------------------------------------------------
 
  if (form.email.value == "")
  {
  alert("Please, enter your e-mail"); form.email.focus(); 
  document.getElementById("email").style.backgroundColor = "#FF5357";
  return;
  } else{ 
    document.getElementById("email").style.backgroundColor = "#ffffff";
	}
if (form.email.value.indexOf('@', 0) == -1 ||
      form.email.value.indexOf('.', 0) == -1)
  { alert("Please, enter your e-mail correctly"); form.email.focus(); return; }

//-----------------------------------------------------------------------------------------------

//-----------------------------------------------------------------------------------------------
  if (form.lengua_origen.value == "")
  {
  alert("Please, enter a Source Language"); form.lengua_origen.focus(); 
  document.getElementById("lengua_origen").style.backgroundColor = "#FF5357";
  return;
  } else{ 
    document.getElementById("lengua_origen").style.backgroundColor = "#ffffff";
	}
//-----------------------------------------------------------------------------------------------
   if (form.lengua_destino.value == "")
  {
  alert("Please, enter Target Language"); form.lengua_destino.focus(); 
  document.getElementById("lengua_destino").style.backgroundColor = "#FF5357";
  return;
  } else{ 
    document.getElementById("lengua_destino").style.backgroundColor = "#ffffff";
	}
//-----------------------------------------------------------------------------------------------
   if (form.comentario.value == "")
  {
  alert("Please, enter Subject Matter"); form.comentario.focus(); 
  document.getElementById("comentario").style.backgroundColor = "#FF5357";
  return;
  } else{ 
    document.getElementById("comentario").style.backgroundColor = "#ffffff";
	}
//-----------------------------------------------------------------------------------------------
   if (form.fecha_limite.value == "")
  {
  alert("Please, enter Delivery Date"); form.fecha_limite.focus(); 
  document.getElementById("fecha_limite").style.backgroundColor = "#FF5357";
  return;
  } else{ 
    document.getElementById("fecha_limite").style.backgroundColor = "#ffffff";
	}
//-----------------------------------------------------------------------------------------------
 
  form.submit();
}