function validate(nombreForma) {
    var theMessage = "Please complete the following:\n-----------------------------------\n";
    var noErrors = theMessage

    // No vacio
    if (document.nombreForma.name.value=="") {
    theMessage = theMessage + "\n --> Your name";
    }

    // Validar un correo electronico
    if (!/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/.test(document.form1.email.value)){
    theMessage = theMessage + "\n --> Enter a valid e-mail address";
    }

    // Entrada de cierta cantidad de letras
    var lengthCheck = document.nombreForma.code.value
    if (lengthCheck.length < 4) {
    theMessage = theMessage + "\n --> Enter 4 character code";
    }

    // radio button seleccionado
    var radioCheck = false;
    for (i = 0; i < document.nombreForma.gender.length; i++) {
    if (document.nombreForma.gender[i].checked)
    radioCheck = true; }
    if (!radioCheck) {
    theMessage = theMessage + "\n --> Choose your gender";
    }

    // Al menos un check box
    var multiCheckbox = false;
    for (i = 0; i < document.nombreForma.session.length; i++) {
    if (document.nombreForma.session[i].checked)
    multiCheckbox = true; }
    if (!multiCheckbox) {
    theMessage = theMessage + "\n --> Choose which session(s)";
    }

    // Select List Usar
    var listCheck = document.form1.location.selectedIndex;
    if (document.nombreForma.location.options[listCheck].value=="none") {
    theMessage = theMessage + "\n --> Choose a location";
    }

    // Checkbox Activado
    var boxCheck = false;
    if (document.nombreForma.confirm.checked) {
    boxCheck = true; }
    if (!boxCheck) {
    theMessage = theMessage + "\n --> Agree to the terms";
    }

    // No hubo errores
    if (theMessage == noErrors) {
    return true;

    } else {

    // Errores encontrados
    alert(theMessage);
    return false;
    }
}