loading gif jquery

Is there a reason you need to use lightbox?  After all, the easiest way to do this would be just to place a div next to the dropdown with a loading .gif image with display set to none in your CSS.  Then you could use jQuery to simply add a show on click event and use a jquery hide in your AJAX upon completion.

no there is no specific reason only to be more aesthetically pleasing and to stop any other input while the report is loaded....

If you want to prevent access to the page while your AJAX request is running, you could always use a modal dialog from the jQuery UI library. It also includes a ProgressBar widget:

jqueryui.com/progressbar/
jqueryui.com/dialog/

I added a div to the css file:

#loading-div { display:block; position: absolute; top: 50%; left: 50%; width: 100px; height: 100px; background-image: url(../reports/images/loading.gif); background-repeat: no-repeat; }

but it never shows.....firebug reported no problems and images is uploaded to server and in correct file

and here is the javascript:

$(document).ready(function() {
      $('#loading-div').hide();

      $('#campaign').change(function() {
            $('#loading-div').show();
            var theCampaign = $(this).val();
                  //alert(theCampaign);
            
        $.ajax({
            type: 'GET',
            url: '_get-main-report-data.php',
            data: 'theCampaign='+theCampaign,
            success: function (response) {
                        console.log(theCampaign);
                console.log(response);
                        $('#results').html('<img src="images/loading.gif" />')
                        $('#results').empty().append(response);
                        
                        $('#reportTable').dataTable({
                              aLengthMenu: [[10,25,50,100,150,200,300,400,800,1000,100000], ['10','25', '50', '100', '150', '200', '300', '400', '800','1000','100000']],
                        });
                        $('#loading-div').hide();
            }
        });
......

chris, i like the progress bar widget, how would i set that to last until the query was done?

thanks chris :-)