[jQuery] Passing variables to jQuery?

[Simon]

Hi,

I'm using this code:

        jQuery('#sendemail').click(function() {
            // update the block message
            jQuery.blockUI({ message: "<h1>Remote call in progress...</
h1>" });

            jQuery.ajax({
                type: 'POST',
                url: 'emaildocument.php',
                                data: 'user=test&file=horse.jpg',
                cache: false,
                complete: function() {
                    // unblock when remote call returns
                    jQuery.unblockUI();
                }
            });
        });

But can't understand how I can pass the data variables 'user' and
'file' from within my PHP page to the jQuery post.

Any ideas?

Cheers

Simon