Hi there,
I'm new here in this forum and I've registered to ask a question about JavaScript or Jquery. I don't know which to use.

I have my code php like that:
//Get the data from system and return in EU format
function ShowDate() {
$Date = date("d"."/"."m"."/"."Y");
return $Date;
//Get the time from system
function ShowTime() {
$Time = date("H".":"."i");
return $Time;

Now I have two input box

Type the date:<input name="txtdate" type="text" class="input" id="txtdate" title="e.g dd/mm/yyyy" value="<?php echo ShowDate(); ?>" size="9" maxlength="10">
Type the time:<input name="txttime" type="text" id="txttime" value="<?php echo ShowTime(); ?>" size="5" maxlength="5">
London: Friday May 21 2010 05:12:00 <br>
New York: Friday May 21 2010 00:12:00<br>
Hong Kong: Friday May 21 2010 12:12:00<br>
Tokyo: Friday May 21 2010 13:12:00<br>

So.... the important is the user can interactive with the date. If I change the date or time all this values will be change as well.
Someone knows how can I do this?
The field txtdate I will get from a calendar plugin (javascript) that I already put in my code.

Thank you for your help.

Andrei Andrade