function page(page) {
        var t = document.getElementById('data_table');
        var select_p = document.getElementById('select_page');
        var res;
        if (page=="previous") {
                res=Table.pagePrevious(t);
                select_p.selectedIndex = res.page;
        }
        else if (page=="next") {
                res=Table.pageNext(t);
                select_p.selectedIndex = res.page;
        }
        else {
                res=Table.page(t,page);
        }
}

function page_specific(page, table_element, page_element) {
        var t = document.getElementById(table_element);
        var select_p = document.getElementById(page_element);
        var res;
        if (page=="previous") {
                res=Table.pagePrevious(t);
                select_p.selectedIndex = res.page;
        }
        else if (page=="next") {
                res=Table.pageNext(t);
                select_p.selectedIndex = res.page;
        }
        else {
                res=Table.page(t,page);
        }
}