gistfile1.js

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript" charset="utf-8">
  function Async(options){};

  Async.each=function(list,callback){
  	var _count=0;

  	if(list.length==null){
  		_list=[];
  		$.each(list,function(i,n){
  			_list.push({
  				"index": i,
  				"item": n
  			});
  		});
  		list=_list;
  	}

  	function onto_next(){
  		if (_count >= list.length) {
  			callback(null);
  		}
  		else {
  			callback({
  				index: _count,
  				item: list[_count],
  				callback: function(){
  					_count++;
  					onto_next();
  				}
  			});
          }
  	};

  	onto_next();
  };

  Async.multi_thread_load=function(list,callback){
      Async.each(list,function(each){
          if(each){
              each.item(function(e){
                  each.callback();
              });
          }else{
              callback();
          }
      });
  };
</script>


<ul id="list">
  <li>First</li>
</ul>


<script type="text/javascript" charset="utf-8">
  var list = $('#list');
  var delegates = [];
  for (var i=0; i < 10; i++) {
    delegates.push(function(ap_stuff){
    	$.ajax({
    	  url: 'test_1.html',
    	  dataType: 'html',
    		success:function(data){
    		  ap_stuff();
    		}
    	});
    });
  }
  
  function ap_stuff() {
    list.append('<li>hi</li>');
  }
  
  function on_complete() {
  	//	Carry on doing what you want to do!
  }
  
  Async.multi_thread_load(delegates,on_complete);
</script>