function $(id) {
    return document.getElementById(id);
}



function EmptyField(field) {
    
    var fieldValue = field.value.replace(/ /g, '');

    if (fieldValue.length == 0) {
        return true;
    } else {
        return false;
    }
}



function EnterPressed(evt) {
    var charCode = (evt.which) ? evt.which : event.keyCode;
    
    if (charCode == '13') {
        return true;
    }
    
    return false;
}



function TextAreaMaxLength(controle, tam, tipo)
{
    var n_car = controle.value.length;
    if (n_car > tam) {
        if(tipo == "cortar") {
            controle.value = controle.value.slice(0,tam);
        }
        return false;
     }
    return true;
}