javascript repeat action

how to do a same loop action? thank you.

$('a.level').click(function() {
var level   = $(this).parent('li').attr("class");
var nxvl    = parseInt(level)+1;
var dir     = $(this).html();

var curr    = $(this);

var data = new Object();
    data.n      = new Date().getTime();
    data.act    = "getdirectory";
    data.level  = level;
    data.direct = dir;

var str = $.toJSON(data); 
$.post('ajax.php', { str: str }, function(result){
    var data = eval('('+obj.data+')');
    var html = [];
    $.each(data, function(key, value) {
        html[key] = "<li class='"+nxvl+"'><a href='javascript:void(0);' title='' class='level'>"+eval(value)+"</a><ul></ul></li>";
    });

    $(curr).next('ul').html(html.join(""));
    $('a.level').click(function() {

        // do the same action
    }

});
return(false);

});

In this case, you probably want to use live handlers. Change your outer:

$('a.level').click(function() {
  ...
}

To:

$('a.level').live('click', function() {
  ...
}

Then you don't worry about adding new click handlers after you've updated the HTML in $(curr).next('ul').html(...)

Try moving the function logic out of the anonymous function and into a named function.

So instead of:

$('element').click(function(){ /* logic */ });

You would have:

function myFunc() { /* logic */ }
$('element').click(myFunc);

That way, within the function you can call the function again, or in your case, attach it to another element you have just created.