function ayuda(texto)
{
    window.open("ayuda.php3?texto=" + texto ,"help","height=150,width=250,toolbar=no,location=no,status=no,menubar=no,resizable=no,scrollbars=auto,top=10,left=10");
}

function validarRequeridos(objects)
{
    
    var ok;
    var i;
    err="";
    for (i=0;i<objects.length;i++)
    {
      if (objects[i].id) {
        if (objects[i].value=="") {
            err=err + "\n-" + objects[i].id; }
      }
    }
    
    return (err);
    
}
function checkDate(_d, _m, _y, _hidden) {
    _date = _d.value + '/' + _m.value + '/' + _y.value;
    regex = /([0-9]{1,2})\/([0-9]{1,2})\/([0-9]{4})/;
    aux = regex.exec(_date);
    if(aux == null)
        return false;

    aux2 = new Date(aux[3], aux[2] - 1, aux[1]);

    if((aux2.getMonth() != (aux[2] - 1)) || (aux2.getDate() != aux[1]))
        return false;

    var months = new Array('01', '02', '03', '04', '05', '06', '07', '08', '09', '10', '11', '12');
    _hidden.value = '' + aux2.getDate() + ' ' + months[aux2.getMonth()] + ' ' + aux2.getYear();
    return true;
}