function change_menu(id){
       if($("ul#" + id).css("display") == "none"){
          $("ul#" + id).slideDown(200);
       }
       else{
          $("ul#" + id).slideUp(200);
       }
}
   

function login(){

     var login = $("#l-field").attr("value");
     var password = $("#p-field").attr("value");
     if( $("input#saveme").attr("checked") ){  var save = 1;  }else{ var save = 0; }
     var ref = $("#ref").attr("value");
     $("#login_answer").load("/login.php?login="+login+"&password="+password+"&save="+save, function(){
       if(!$("#login_answer").html()){ window.location = ref; }
     });
}

function exit(ref){
     $().load("/exit.php", function(){
       window.location = ref;
     });
}