function checkform(field, txtEmail, txtPwd, txtPwd1, txtNome, txtSobre, txtPais, txtCheck){

if (field.login.value == ""){
alert(txtEmail);
return false;
}

else if (field.pwd.value.length < 5 || field.pwd.value == ""){
alert(txtPwd);
return false;
}

else if (field.pwd1.value.length < 5 || field.pwd1.value == ""){
alert(txtPwd1);
return false;
}

else if (field.nome.value == ""){
alert(txtNome);
return false;
}

else if (field.sobrenome.value == ""){
alert(txtSobre);
return false;
}

else if (field.pais.value == ""){
alert(txtPais);
return false;
}

else if (field.check.value.length < 5 || field.check.value == ""){
alert(txtCheck);
return false;
}


}

function checklogin(field, txtEmail, txtPwd){

if (field.verificar.value == "s"){
    if (field.login.value == ""){
    alert(txtEmail);
    return false;
    }
    else if (field.pwd.value.length < 5 || field.pwd.value == ""){
    alert(txtPwd);
    return false;
    }
}
else if (field.verificar.value == "r"){
    if (field.login.value == ""){
    alert(txtEmail);
    return false;
    }
}

}


function checkrc(form, di, df){

var error = 0;

var dfIndex = form.thdf.selectedIndex;
var thdf = form.thdf.options[dfIndex].value;

var diIndex = form.thdi.selectedIndex;
var thdi = form.thdi.options[diIndex].value;

if (thdi == ''){
alert(di);
error++;
}

if (thdf == ''){
alert(df);
error++;
}

if (error == 0){
load();
return true;
}
else {
return false;
}


}