$(document).ready(function() {

    $("#global_search_button").focus();

    $("#global_search_button").live("click", function() {
        var token = $("#global_search_query").val();
        if (token == "") {
            alert('Devi digitare un termine per attivare la ricerca!');
        }
        else {
            window.location.href = 'catalog_browser.aspx?text=' + token;
        }
        return false;
    });
});