function select_all(linknum) 
{     
     for(c=1;c<linknum;c++)
     {
     document.getElementById("select_link_"+c).checked=true;
     }
}

function count_link(id)
{
    var http = createRequestObject();
    http=createRequestObject();
    http.open("get", "admin_link_ajax.php?ajax_function=count_link&id="+id);
    http.send(null)                                                    
    return 0;
}

function select_none(linknum) 
{     
     for(c=1;c<linknum;c++)
     {
     document.getElementById("select_link_"+c).checked=false;
     }
}