function searchExport() {    
    var user = document.getElementById("user").value;
    var source = document.getElementById("source").value;
    var start_date = document.getElementById("start_date").value;
    var end_date = document.getElementById("end_date").value;

    if(source == "") {
        ErrorAlert("Origine deve avere un valore");
        return
    }

    document.getElementById("search_button").style.display = 'none';
    document.getElementById("search_loader").style.display = 'block';

    var xmlhttp = new XMLHttpRequest();
    xmlhttp.onreadystatechange = function () {
        if (this.readyState == 4 && this.status == 200) {
            document.querySelector("#search_result_content").innerHTML = this.responseText;

            document.getElementById("search_button").style.display = 'block';
            document.getElementById("search_loader").style.display = 'none';

            $(document).ready( function () {
                new DataTable('#search_result_table', {
                    paging: false,
                    scrollCollapse: true,
                    scrollY: '500px',
                    layout: {
                        topStart: {
                            buttons: [
                                {
                                    extend: 'colvis',
                                    postfixButtons: ['colvisRestore'],
                                    popoverTitle: 'Visibilità colonne'
                                },
                                'print','excel','pdf', 'csv'
                            ]
                        }
                    },
                    language: {
                        emptyTable: "Nessun dato presente nella tabella",
                        search: "Cerca:",
                        infoEmpty: "Visualizzati da 0 a 0 di 0 risultati",
                        info: "Visualizzati da _START_ a _END_ di _TOTAL_ risultati",
                        buttons: {
                            print: "Stampa",
                            colvis: "Visualizza",
                            colvisRestore: "Ripristina visualizzazione"
                        }
                    },
                    order: {
                        idx: 0,
                        dir: 'desc'
                    }
                });     
            } );
        }
    };
    xmlhttp.open("GET", "public/exports/export_list.php?user="+user+"&source="+source+"&start_date="+start_date+"&end_date="+end_date);
    xmlhttp.send();
}