(function($){

$.fn.dropdown = function(params) {
	
	var defaults = {
		openClass: 'open',
		fadeOut: 500,
		hasChildClass: 'hasChild'
	}
	
	var opts = $.extend(defaults, params);

	this.each(run);
	
	function run() {
		var $wrapper = $(this);
		var $items = $wrapper.find('li');
		var $dropdowns = $wrapper.find('ul:not(:first)');
		
		$dropdowns.hide();
		
		$items.filter(':has(ul)').find('>a').addClass(opts.hasChildClass);
		$itemsHasUl = $items.filter(':has(ul)');
		$itemsHasNotUl = $items.filter(':not(:has(ul))');
		
		$itemsHasUl.addClass('hasUl');
		$itemsHasNotUl.addClass('hasNotUl');
		
		$itemsHasUl.hover(function() {
			$this = $(this);
			$this.find('>ul').show();
			$this.find('>a').addClass('open');
		}, function() {
			$this = $(this);
			$this.find('>ul').hide();
			$this.find('>a').removeClass('open');
		});
	}
}

})(jQuery)