function validateFormOnSubmit(theForm,option) {
	var reason = "";

	if (option == 1)
	{
		reason = validateEmail(theForm.Email);
  		reason += validateEmpty(theForm.nombre);
  		reason += validateEmpty(theForm.apellido);
  		reason += validateEmpty(theForm.nickname);
  		reason += validatePass(theForm.pass1,theForm.pass2);
  		reason += validateEmpty(theForm.direccion);
  		reason += validateEmpty(theForm.localidad);
  		reason += validateEmpty(theForm.provincia);
	}
	else if (option == 2)
	{
		reason = validateEmail(theForm.email);
  		reason += validateEmpty(theForm.nombre);
		reason += validatePhone(theForm.telefono);
	}
	else if (option == 3)
	{
		reason = validateEmail(theForm.email);
  		reason += validateEmpty(theForm.nombre);
		reason += validatePhone(theForm.telefono);
		reason += validateEmpty(theForm.operacion);
		reason += validateEmpty(theForm.rubro);
		reason += validateEmpty(theForm.comentario);
	}
	else if (option == 4)
	{
		reason = validateEmail(theForm.email);
  		reason += validateEmpty(theForm.nombre);
		reason += validatePhone(theForm.telefono);
		reason += validateEmpty(theForm.comentario);
	}

  	if (reason != "") {
    	alert("Algunos campos no fueron completados:\n" + reason);
    	return false;
 	}

  	return true;
}

function validateEmpty(fld) {
    var error = "";

    if (fld.value.length == 0) {
        fld.style.background = 'Yellow';
        error = "El campo " + fld.name + " requerido no fue completado\n"
    } else {
        fld.style.background = 'White';
    }
    return error;
}

function validatePass(fld1,fld2) {
    var error = "";

    if (fld1.value.length == 0) {
        fld1.style.background = 'Yellow';
        error = "El campo Password es requerido y no fue completado\n"
    } else {
        fld1.style.background = 'White';
    }
    if (fld2.value.length == 0) {
        fld2.style.background = 'Yellow';
        error = "El campo Repetir Password es requerido y no fue completado\n"
    } else {
        fld2.style.background = 'White';
    }
    if (fld1.value == fld2.value) {
		fld1.style.background = 'White';
        fld2.style.background = 'White';
    } else {
        fld1.style.background = 'Red';
        fld2.style.background = 'Red';
        error = "Los campos de Password no concuerdan\n"
    }

    return error;
}

function validatePhone(fld) {
    var error = "";
    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');

   if (fld.value == "") {
        error = "No se ha ingresado un n\u00famero de tel\u00e9fono\n";
        fld.style.background = 'Yellow';
    } else if (isNaN(parseInt(stripped))) {
        error = "El n\u00famero ingresado no es v\u00e1lido\n";
        fld.style.background = 'Yellow';
    } else {
    	fld.style.background = 'White';
    }

    return error;
}


function trim(s)
{
  return s.replace(/^\s+|\s+$/, '');
}

function validateEmail(fld) {
    var error="";
    var tfld = trim(fld.value);                        // value of field with whitespace trimmed off
    var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/ ;
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ;

    if (fld.value == "") {
        fld.style.background = 'Yellow';
        error = "No se ha ingresado una direcci\u00f3n de email\n";
    } else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        fld.style.background = 'Yellow';
        error = "Por favor, ingrese una direcci\u00f3n de email v\u00e1lida\n";
    } else if (fld.value.match(illegalChars)) {
        fld.style.background = 'Yellow';
        error = "La direcci\u00f3n de email contiene caracteres no permitidos\n";
    } else {
        fld.style.background = 'White';
    }
    return error;
}