/* usage example:

$('a').asyncEach(
 function(){ $(this).fadeOut(); }, //each callback, return false to stop it
 function(i){ return 5*i; },       //duration of the next delay, this can a number too
 function(){ alert('finished'); }  //complete callback
)

*/

//the plugin:

;(function($){

function asyncEach() { }
 
asyncEach.prototype = {
	init: function( object, each, delay, complete ) {
		this.object = object;
		this.each = each;
		this.complete = complete;
		this.i = -1;
		this.length = object.length;

		switch (typeof delay){
			case "function": 
				this.delayFn = delay; 
				this.isFn=true; 
				break;
			case "number": ;
			case "string": 
				this.delay = +delay; 
				break;
			default: this.delay = 0;
		}
		
		this.next();
		return object;
	},
	
	next: function() {
		var that = this;
		if ( this.i == this.length ) 
			return this.complete.call( this.object, this.object, this );
		this.i++;
		
		if ( this.isFn )
			this.delay = +this.delayFn( this.i );
		
		var value = this.object[ this.i ];
		
		if ( this.each.call( value, this.i, value, this ) !== false )
			setTimeout( function() { that.next(); }, this.delay );
		
	},
	
}

$.asyncEach = function() {
	var inst = new asyncEach();
	return inst.init.apply(inst, arguments);
}

$.fn.asyncEach = function( each, delay, complete ) {
	return jQuery.asyncEach( this, each, delay, complete );
}

})(jQuery);