Change a function from button-executed to auto-executed

Question

I'm using the following sample code which prints locally when clicking the button, but would like it to print automatically when the page loads.

Here is the sample code:

        <script>
            $(document).ready(function () {
                $("#printBtn").click(function () {
                    //1. perform server side task
                    $.ajax({
                        url: "CreateTextFileHandler.ashx", success: function (txtFileName) {
                            alert("The text file: " + txtFileName + " was created at server side. Continue printing it...");

                            //2. Print the created text file specifying the file name

                            jsWebClientPrint.print('useDefaultPrinter=' + $('#useDefaultPrinter').attr('checked') + '&printerName=' + $('#installedPrinterName').val() + '&txtFileName=' + txtFileName);


                        }
                    });
                });
            });
        </script>

I want to change it by removing the $("#printBtn").click(function() so it will run without user intervention after the page loads. When I do the CreateTextFileHandler.ashx executes and the alert executes, but the call to jsWebClientPrint does not excecute.