> I would like to know if it possible to pass in any way some values
>
> from javascript functions to php variables ?
Yes, but...
You can have JavaScript call another URL using something like:
document.location = 'http://yoursite.com/whatever.php?foo=' . $foo;
But keep this in mind: PHP lives on the server. JavaScript lives in your
browser. PHP exists only long enough to deliver your HTML/JavaScript and
then "dies". JavaScript runs, long after PHP is gone. To have them talk
back and forth requires another page hit for each "exchange" in the
conversation.
So PHP spewing out some JavaScript is fairly straight-forward -- It's just
some more text to generate as far as PHP is concerned.
JavaScript talking back to PHP, however, requires a whole 'nother URL to be
loaded, and that's expensive.
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