please help

I get the follwing "notice" messages when trying to use the class:

Notice: Undefined property: form_calendar_class::$JS_DONE in ......./formsgeneration/cal_class.php on line 599

Notice: Undefined property: form_calendar_class::$btnId in ......../formsgeneration/cal_class.php on line 413



This messages does not appears in the included demo file, but it does appear if I include the same demo file code within my form. I am very confused. What could it be the problem????

changing the property:
static $JS_DONE = false;
to
private $JS_DONE = false;
got rid of the first message but I was not able to get rid of the second message...

Also, how do you make the selected date appear in the next page of the form. If I select a date and submit the form, the default date value appears instead of the selected date

The only difference between the example and the form that was marking me errors was that I had the error reporting turned on:

error_reporting(E_ALL);
ini_set('display_errors', '1');

So basically it ALWAYS marks those notices and your class does not works correctly. At least with PHP Version 5.1.6