Mark,
That does sounds like a better plan - but I'm not familiar with
jscripting... I'm a newbie

This is the script.... where would I
enter that alert, and how?
function calendar2(obj_target) {
// assigning methods
this.gen_date = cal_gen_date2;
this.gen_time = cal_gen_time2;
this.gen_tsmp = cal_gen_tsmp2;
this.prs_date = cal_prs_date2;
this.prs_time = cal_prs_time2;
this.prs_tsmp = cal_prs_tsmp2;
this.popup = cal_popup2;
// validate input parameters
if (!obj_target)
return cal_error("Error calling the calendar: no target control
specified");
if (obj_target.value == null)
return cal_error("Error calling the calendar: parameter specified is
not valid target control");
this.target = obj_target;
this.time_comp = BUL_TIMECOMPONENT;
this.year_scroll = BUL_YEARSCROLL;
// register in global collections
this.id = calendars.length;
calendars[this.id] = this;
}
function cal_popup2 (str_datetime) {
this.dt_current = this.prs_tsmp(str_datetime ? str_datetime :
this.target.value);
if (!this.dt_current) return;
var obj_calwindow = window.open(
'calendar.html?datetime=' + this.dt_current.valueOf()+ '&id=' +
this.id,
'Calendar', 'width=200,height='+(this.time_comp ? 215 : 190)+
',status=no,resizable=no,top=200,left=200,dependent=yes,alwaysRaised=yes'
);
obj_calwindow.opener = window;
obj_calwindow.focus();
}
// timestamp generating function
function cal_gen_tsmp2 (dt_datetime) {
return(this.gen_date(dt_datetime) + ' ' + this.gen_time(dt_datetime));
}
// date generating function
function cal_gen_date2 (dt_datetime) {
return (
(dt_datetime.getMonth() < 9 ? '0' : '') + (dt_datetime.getMonth() +
1) + "/"
+ (dt_datetime.getDate() < 10 ? '0' : '') + dt_datetime.getDate() +
"/"
+ dt_datetime.getFullYear()
);
}
// time generating function
function cal_gen_time2 (dt_datetime) {
return (
(dt_datetime.getHours() < 10 ? '0' : '') + dt_datetime.getHours() +
":"
+ (dt_datetime.getMinutes() < 10 ? '0' : '') +
(dt_datetime.getMinutes()) + ":"
+ (dt_datetime.getSeconds() < 10 ? '0' : '') +
(dt_datetime.getSeconds())
);
}
// timestamp parsing function
function cal_prs_tsmp2 (str_datetime) {
// if no parameter specified return current timestamp
if (!str_datetime)
return (new Date());
// if positive integer treat as milliseconds from epoch
if (RE_NUM.exec(str_datetime))
return new Date(str_datetime);
// else treat as date in string format
var arr_datetime = str_datetime.split(' ');
return this.prs_time(arr_datetime[1], this.prs_date(arr_datetime[0]));
}
// date parsing function
function cal_prs_date2 (str_date) {
var arr_date = str_date.split('/');
if (!this.dt_current) return alert ("Invalid date selected: You cannot
select same day distributions.");
if (arr_date.length != 3) return alert ("Invalid date format: '" +
str_date + "'.\nFormat accepted is dd-mm-yyyy.");
if (!arr_date[1]) return alert ("Invalid date format: '" + str_date +
"'.\nNo day of month value can be found.");
if (!RE_NUM.exec(arr_date[1])) return alert ("Invalid day of month
value: '" + arr_date[1] + "'.\nAllowed values are unsigned integers.");
if (!arr_date[0]) return alert ("Invalid date format: '" + str_date +
"'.\nNo month value can be found.");
if (!RE_NUM.exec(arr_date[0])) return alert ("Invalid month value: '"
+ arr_date[0] + "'.\nAllowed values are unsigned integers.");
if (!arr_date[2]) return alert ("Invalid date format: '" + str_date +
"'.\nNo year value can be found.");
if (!RE_NUM.exec(arr_date[2])) return alert ("Invalid year value: '" +
arr_date[2] + "'.\nAllowed values are unsigned integers.");
var dt_date = new Date();
dt_date.setDate(1);
if (arr_date[0] < 1 || arr_date[0] > 12) return alert ("Invalid month
value: '" + arr_date[0] + "'.\nAllowed range is 01-12.");
dt_date.setMonth(arr_date[0]-1);
if (arr_date[2] < 100) arr_date[2] = Number(arr_date[2]) +
(arr_date[2] < NUM_CENTYEAR ? 2000 : 1900);
dt_date.setFullYear(arr_date[2]);
var dt_numdays = new Date(arr_date[2], arr_date[0], 0);
dt_date.setDate(arr_date[1]);
if (dt_date.getMonth() != (arr_date[0]-1)) return alert ("Invalid day
of month value: '" + arr_date[1] + "'.\nAllowed range is
01-"+dt_numdays.getDate()+".");
return (dt_date)
}
// time parsing function
function cal_prs_time2 (str_time, dt_date) {
if (!dt_date) return null;
var arr_time = String(str_time ? str_time : '').split(':');
if (!arr_time[0]) dt_date.setHours(0);
else if (RE_NUM.exec(arr_time[0]))
if (arr_time[0] < 24) dt_date.setHours(arr_time[0]);
else return cal_error ("Invalid hours value: '" + arr_time[0] +
"'.\nAllowed range is 00-23.");
else return cal_error ("Invalid hours value: '" + arr_time[0] +
"'.\nAllowed values are unsigned integers.");
if (!arr_time[1]) dt_date.setMinutes(0);
else if (RE_NUM.exec(arr_time[1]))
if (arr_time[1] < 60) dt_date.setMinutes(arr_time[1]);
else return cal_error ("Invalid minutes value: '" + arr_time[1] +
"'.\nAllowed range is 00-59.");
else return cal_error ("Invalid minutes value: '" + arr_time[1] +
"'.\nAllowed values are unsigned integers.");
if (!arr_time[2]) dt_date.setSeconds(0);
else if (RE_NUM.exec(arr_time[2]))
if (arr_time[2] < 60) dt_date.setSeconds(arr_time[2]);
else return cal_error ("Invalid seconds value: '" + arr_time[2] +
"'.\nAllowed range is 00-59.");
else return cal_error ("Invalid seconds value: '" + arr_time[2] +
"'.\nAllowed values are unsigned integers.");
dt_date.setMilliseconds(0);
return dt_date;
}
function cal_error (str_message) {
alert (str_message);
return null;
}