Pass variables from Perl to Ajax and back

[virtualweb]

Hi everybody, I'm creating a website with HTML / Javascript embeded in perl code. I use perl to get values from a MySQL database which I need to feed a chart created with the javascript code so the chart can be updated on the fly. Everything works perfectly well except I don't know how the perl variable values can be passed to the javascript within the same document.

Here is abbreviated example code:

#!/usr/bin/perl -w
use CGI;
use sctrict;

$Type = 'line';
$width = '200';
$line_color ='#FF0000';
$fillColor = '#FFFF00',
$height = '20';

### I NEED TO POPULATE THE BELOW DOTED LINES WITH THE ABOVE VARIABLES  ###

print q~

  <script>

    $(document).ready(function () {

     $("#sparkline4").sparkline([34, 43, 43, 35, 44, 32, 15, 22, 46, 33, 86, 54, 73, 53, 12, 53, 23, 65, 23, 63, 53, 42, 34, 56, 76, 15, 54, 23, 44], {
            type: '........',
            lineColor: '.....', 
            fillColor: '.......',
            width: '......',
            height: '.....'
        });

   });

var hellow_world: 'Hello World';

</script>
~;

$HELLO_WORLD = "..........";

### ----- END OF PERL CODE ---- ###

Also I need to do this the other way around. The value of the hellow_worl javascript variable need to populate the dots in the $HELLO_WORLD perl variable.

Thanx a million
webvirtual